急急急!!!!英语好的能帮忙翻译一下吗 别用任何翻译器!!
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将一粒种子放入装满泥土的塑料杯子里将圆筒里的ph5倒十毫升倒入烧杯里将烧杯中的十毫升倒入塑料杯子里... 将一粒种子放入装满泥土的塑料杯子里 将圆筒里的ph5 倒十毫升倒入烧杯里 将烧杯中的十毫升倒入塑料杯子里 展开
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- Only灬小夜 2013-10-17 00:00:00
- put a seed into the plastic cup full of mud pour 10 ml of the ph5 from cylinderical vessel into the beaker pour 10ml of the ph5 from the beaker into the plastic cup
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- 519150898 2013-10-17 00:00:00
- 将一粒种子放入装满泥土的塑料杯子里 put a seed into the plastic cup filled with soil 将圆筒里的ph5 倒十毫升倒入烧杯里 pour 10 ml of ph5 from the cylinder into the beaker 将烧杯中的十毫升倒入塑料杯子里 pour what in the beaker into the plastic cup
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热门问答
- 急急急!!!!英语好的能帮忙翻译一下吗 别用任何翻译器!!
- 将一粒种子放入装满泥土的塑料杯子里将圆筒里的ph5倒十毫升倒入烧杯里将烧杯中的十毫升倒入塑料杯子里... 将一粒种子放入装满泥土的塑料杯子里 将圆筒里的ph5 倒十毫升倒入烧杯里 将烧杯中的十毫升倒入塑料杯子里 展开
2013-10-16 03:58:54
555
2
- 英语高手帮忙翻译一下
- ThequalitysystemofthecompanyisinconformitywithISO9002.Makingcomprehensiveuseofbiotechnology,thecompanyspecializesinmanufacturingandsellingC-4seriesorganicacidsandchiralpr... The quality system of the company is in conformity with ISO 9002 . Making comprehensive use ofbiotechnology, the company specializes in manufacturing and selling C-4series organic acids and chiral products. These products are widely used in many fields such as food, phamaceutical and chemical industries, and are well accepted by the overseas markets. The man products are L-Malic acid , DL-Malic acid, L(+)-Tartaric acid , Fumaric acid, Maleic acid and other organic acids. Annual productivity amounts to 20,000 tones. The company has become an important manufacturer of C-4 series organic acids in the world . All the products of the company have respectively met the different international aadvanced standards such as Food chemicals Codex, U.S. Pharmacopoeia ,British Pharmacopoeia and the products have obtained Star-K Kosher certificate. Above 70% of the Companys products are exported to Japan, Europe, Australias, the United states and middle East , and they are renown and well recognized in the international markets. The company will devote itself to research and development of enzyme technology and organic electrochemistry. It will continuously introduce new food additives, chiral pharmaceutical intermediates, chiral auxiliaries and chiral drugs. Depending on superior quality, good service and high reputation, the company is willing to establish a long-term mutually beneficial business partnership with overseas customers and continue contribute to the happy life of humans. 展开
2009-09-17 10:19:02
555
2
- 英语高手给翻译一下啊 不要用在线翻译器 那个不正确 急哦
- 本实验采用共沉淀法制备Fe3O4纳米颗粒,以硅烷偶联剂巯基丙基三甲氧基硅烷作为添加剂,硼酸化钾作为还原剂,在银氨溶液中制备出具有核壳结构的Fe3O4/Ag 纳米复合粒子。以碱性品红为探针分子,测量制备出的Fe3O4/Ag纳米复合粒子的表面增强拉曼光谱。 表面增强... 本实验采用共沉淀法制备Fe3O4纳米颗粒,以硅烷偶联剂巯基丙基三甲氧基硅烷作为添加剂,硼酸化钾作为还原剂,在银氨溶液中制备出具有核壳结构的Fe3O4/Ag 纳米复合粒子。以碱性品红为探针分子,测量制备出的Fe3O4/Ag纳米复合粒子的表面增强拉曼光谱。 表面增强拉曼光谱是一种非常有效的探测界面特性和分子间相互作用、表征表面分子吸附行为和分子结构的工具,而活性基底的制备是获得SERS信号的前提。 实验结果表明:Fe3O4@Ag纳米复合粒子是很好的活性基底,这对核壳结构的纳米复合粒子在生物医学方面的应用有了进一步的认识。 展开
2011-06-13 12:25:21
450
1
- 跪求(急求)帮忙翻译一下
- 无机前处理室主要开展食品样品中无机检测进仪器前的预处理工作。通过向食品样品中加入强氧化性酸,采用微波消解技术或电热板加热技术使被测无机组分从复杂的样品中分离出来,除去对分... 无机前处理室主要开展食品样品中无机检测进仪器前的预处理工作。通过向食品样品中加入强氧化性酸,采用微波消解技术或电热板加热技术使被测无机组分从复杂的样品中分离出来,除去对分析测定有干扰的基本物质,制成便于测定的溶液形式。样品的预处理过程都是在无机前处理室进行的。 主要仪器:ETHOS A微波消解仪、SD500电热板、Mill-Q Advandage A10超纯水仪等。 光谱室主要开展食品、饮用水等样品中重金属元素含量检测工作,各类仪器针对不同的物质进行检测有其各自的优势。原子吸收光谱仪耶拿ZEEnie-700系列仪器主要用于铅、镉、铜、铬、锰、锌、铁、钙、镁、钾、钠等项目检测,双道原子荧光光度计吉天AFS-820a系列仪器主要用于砷、汞、锡等项目检测。光谱分析技术已经被广泛应用于食品和水质检测、环境保护、医药卫生等领域。 主要仪器:原子吸收光谱仪耶拿ZEEnie-700系列、双道原子荧光光度计AFS-820a系列。 承检项目:食品、饮用水中重金属铅、镉、铜、铬、锰、锌、铁、钙、镁、钾、钠、砷、汞、锡等。 要英文的谢谢 展开
2013-02-18 02:23:38
341
3
- 请教英语高人,帮忙翻译一下.急用,谢谢!!!
- Theelementalcontentofrawmaterials,phosphogypsum,substrate(potassiumsalt),products(superphosphateand“Amofoska”),soil,andgrasswasdeterminedusingconventionalandepithermaln... The elemental content of raw materials, phosphogypsum, substrate (potassium salt), products (superphosphate and “Amofoska”), soil, and grass was determined using conventional and epithermal neutron activation analysis using the IBR-2 pulsed fast reactor at Frank Laboratory of Neutron Physics (FLNP), Joint Institute for Nuclear Research (JINR), Dubna, Russia. The analytical procedure was described elsewhere by Frontasyeva and Pavlov [15]. Quality control was based on the application of certified reference materials (CRMs): IAEA-336 (lichens), IAEA-SDM (lake sediment) and IAEA-SL1 (soil). The certified values and the results obtained by NAA were compared (Table 2). Concentrations of most elements were in good agreement with the CRMs except for Ti, Ni, Ce, Eu, Dy and Rb, which differed from the certified value as follows: Ti - 41.7 %, Ni - 26.5 %, Ce - 24.3 %, Eu - 32.9 % and Dy - 33.3 % in IAEA-SL1 (soil) and Rb - 20.6 % in IAEA-336 (lichens). For the 21 elements in agreement with the certified values the bias observed was below 20 %. For 11 elements (Al, V, Mn, As, Br, Sc, Cr, Sm, Na, Co and Sb), the bias ranged from 0.03 % to 5 %, for 5 elements (Fe, Zn, Ba, Th and Cs) the bias was greater than 5 % but lower than 10 %, and for 5 elements (La, Tb, Hf, Ta and U) the bias was determined to be between 10 % and 20 %. Samples of raw materials, phosphogypsum, substrate, products, soil (of about 0.1 g), and grass (0.3 g) were irradiated in cadmium-screened channels 1 and 2 of the pneumatic “Regata” system described elsewhere by Frontasyeva and Pavlov [15]. In order to determine elements associated with long-lived radionuclides, samples were irradiated for 100 hours. Spectra of induced gamma activity were recorded after 4 and 20-24 days of cooling. Short irradiations, 5 minutes for grass samples and 60 seconds for the remaining samples, allowed determination of Al, Ca, Cl, I, K, Na, Mg, Mn, Ti and V. Gamma-ray spectra were recorded after 5 and 12 minutes after irradiation. Data processing was performed using software developed at FLNP JINR [16, 17]. All gamma-spectrometers and counting electronics were made at JINR [16]. The software developed at FLNP JINR for peak searching, peak fitting, and nuclide identification routines were used for processing the amplitude spectra [16]. In the case of the lack of analytical data, there was a half of the detection limit inserted for each analyte [18]. Principal component analysis (classical PCA and fuzzy PCA) was performed as a tool for searching the possible correlations between environmental and industrial samples that could implicate the impact of phosphatic fertilizer production on the environment adjacent to the plant. 请给一个比较能看懂的翻译,谢谢. 展开
2007-06-03 08:49:34
445
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- 帮忙翻译一下化工方面的单词 英语
- 碱值测定器试剂移液管锥形瓶酸式滴定管甲基黄溴甲酚绿混合指示剂盐酸标准溶液摩尔/升酸式滴定管... 碱值 测定器 试剂 移液管 锥形瓶 酸式滴定管 甲基黄溴甲酚绿混合指示剂 盐酸标准溶液 摩尔/升 酸式滴定管 展开
2010-01-17 06:38:39
641
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- 找英语好,懂化学的高手帮忙,急急急!翻一下下!
- Tetrabutylammoniumhydroxidesolution,Mobilephase,pH7.0Phosphatebuffer,Resolutionsolution,Standardpreparation,andChromatographicsystem—ProceedasdirectedintheAssayunderCefi... Tetrabutylammonium hydroxide solution,Mobile phase,pH7.0Phosphate buffer,Resolution solution,Standard preparation,and Chromatographic system— Proceed as directed in the Assayunder Cefixime. Assay preparation— Constitute Cefixime for Oral Suspension as directed in the labeling.Quantitatively dilute an accurately measured volume of the suspension thus obtained,freshly mixed and free from air bubbles,with pH7.0Phosphate bufferto obtain a solution having a concentration of about 0.2mg of cefixime per mL. Procedure— Proceed as directed in the Assayunder Cefixime.Calculate the quantity,in mg,of cefixime (C16H15N5O7S2)in each mLof the constituted suspension prepared from the Cefixime for Oral Suspension taken by the formula: (LC/D)(rU/rS),in which Lis the labeled quantity,in mg per mL,of cefixime in the constituted suspension,Dis the concentration,in mg per mL,of cefixime in the Assay preparationon the basis of the labeled quantity in the constituted suspension and the extent of dilution,and the other terms are as defined therein. 展开
2018-12-08 06:04:24
511
0
- 帮忙翻译一段英语
- Plant material and culture conditions have been described (7). Briefly, a diploid tissue culture line, WOO1C, of wild carrot, Daucus carota L., was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2,4-dichlorophenoxy... Plant material and culture conditions have been described (7). Briefly, a diploid tissue culture line, WOO1C, of wild carrot, Daucus carota L., was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2,4-dichlorophenoxyacetic acid (2,4-D). To regenerate plants from the culture, callus tissue was transferred to the same medium devoid of 2,4-D (embryogenic medium). All experiments were performed with cultures grown in liquid medium. For convenience, cultures grown in 2,4-D-containing medium are referred to as "callus cultures", and those grown in medium without 2,4-D as "embryo cultures." The growth of callus cultures was measured by the sidearmturbidity method (7). The number of cells at any time point of growth was estimated from turbidity in a Klett-Summerson calorimeter and was expressed in arbitrary units. For example, Klett 100 corresponds to ="2 X 106 cells per ml. The relationship is linear up to Klett 150 in our Klett-Summerson colorimeter. Suspension cultures ofWOOLC cell line are normally maintained at cell densities between 106 and 107 cells per ml in 0.1 mg of 2,4-D per liter (high-density culture) in shake flasks. During a quantitative study on embryogenesis, we found that maximal embryo production can be achieved by first incubating the culture at high density in medium without 2,4-D for one generation time and then diluting it to 2-3 x 104 cells per ml (low-density culture). To compare cultures of comparable density, callus cultures and embryo cultures were subjected to the same procedure. To initiate low-density embryo or callus cultures, an 8-day-old high-density culture grown at the logarithmic phase was washed three times with fresh callus or embryogenic medium and resuspended at 8 x 105 cells per ml for one generation (3 days) in its corresponding medium. It was then diluted to 2 x 104 cells per ml; 20 ml of the culture was incubated in a plastic Petri dish (9 cm in diameter) at 240C. The morphogenetic events of the cultures were examined and photographed under a dissecting microscope. 请不要用google的那个,我看不懂~~ 展开
2008-02-19 03:32:04
501
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- 急求翻译 请帮忙翻译一下这篇英文资料,急用!!!!
- Wells-BrookfieldCone/PlateRapidDeterminationOfAbsoluteViscosityIntroductionTheWells-BrookfieldCone/PlateViscometergivesresearchersasophisticatedinstrumentforroutinelydete... Wells-Brookfield Cone/Plate Rapid Determination Of Absolute Viscosity Introduction The Wells-Brookfield Cone/Plate Viscometer gives researchers a sophisticated instrument for routinely determining absolute viscosity of fluids in small sample volumes. Its cone and plate geometry provides the precision necessary for development of complete rheological data. Principle of Operation The Wells-Brookfield Cone/Plate Viscometer is a precise torque meter which is driven at discrete rotational speeds. The torque measuring system, which consists of a calibrated beryllium-copper spring connecting the drive mechanism to a rotating cone, senses the resistance to rotation caused by the presence of sample fluid between the cone and a stationary flat plate. The resistance to the rotation of the cone produces a torque that is proportional to the shear stress in the fluid. The amount of torque is indicated either on a dial or digital display, depending on model. This reading is easily converted to absolute centipoise units (mPa.s) from pre-calculated range charts. Alternatively, viscosity can be calculated from the known geometric constants of the cone, the rate of rotation, and the stress related torque. See Range Tables The correct relative position of cone and plate is obtained by following a simple mechanical procedure without the need for external gauges or supplementary instrumentation. The stationary plate forms the bottom of a sample cup which can be removed, filled with .5 ml to 2.0 ml of sample fluid (depending on cone in use), and remounted without disturbing the calibration. The sample cup is jacketed and has tube fittings for connection to a constant temperature circulating bath. The system is accurate to within ?.0% of the working range. Reproducibility is to within ?.2%. Working temperature range is from 0oC to 100oC. 展开
2018-11-17 09:10:28
437
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- 帮忙翻译一下,谢谢
- IFRS13willhelpincreasetransparencywhenentitiesusemodelstomeasurefairvalue,particularlywhenusersneedmoreinformationaboutmeasurementuncertainty,suchaswhenthemarketforanasse... IFRS 13 will help increase transparency when entities use models to measure fair value, particularly when users need more information about measurement uncertainty, such as when the market for an asset or a liability has become less active. IFRS 13 requires entities to disclose information about the valuation techniques and inputs used to measure fair value, as well as information about the uncertainty inherent in fair value measurements (which was of particular concern during the global fi nancial crisis). Some of those disclosures, including the fair value hierarchy, were already introduced in March 2009 through an amendment to IFRS 7 Financial Instruments: Disclosures. Those disclosures have been relocated to IFRS 13. The requirements in IFRS 13 also incorporate the guidance in a FASB Staff Position (FSP) issued in April 2009. 展开
2012-04-29 01:58:49
487
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- 射频电容液位计英语怎么翻译?除了用翻译器翻译的Rf capacitor applications
2012-06-17 15:56:55
403
1
- 求助:帮忙帮忙,机械英语NB的帮忙翻译下
- The effect of beam diameter on the electron skirt in a high pressure scanning electron microscope R. Belkorissata, A. Kadouna, B. Khelifab, C. Mathieub,* aLaboratoire d’Elaboration et de Caracte´risation des Mate´riaux, Univ... The effect of beam diameter on the electron skirt in a high pressure scanning electron microscope R. Belkorissata, A. Kadouna, B. Khelifab, C. Mathieub,* aLaboratoire d’Elaboration et de Caracte´risation des Mate´riaux, Universite´ Djilali Liabe`s de Sidi Bel-Abbes, BP 89, 22000 Sidi Bel-Abbe`s, Algeria bCentre de Calcul et de Mode´lisation de Lens, University D’Artois, Faculte´ Jean Perrin, SP 18 Rue Jean Souvraz, 62307 Lens cedex, France Received 9 February 2004; accepted 19 March 2004 Abstract Helium gas and air are commonly used in the high pressure scanning electron microscope (HPSEM). The presence of a gaseous environment in the specimen chamber modifies the electron beam profile. In order to fully understand the beam-gas interaction, we have investigated the beam-diameter effect for two gases (helium and air) by Monte Carlo simulation. In this calculation, we have assumed that the electron beam is Gaussian and we have explored the influence of the nature of the gas at low voltage. When the beam diameter varies between 1 and 100 nm, there is no influence on the beam profile for these two gases. The resolving power of the HPSEM is not affected by the beamgas interaction. These theoretical results have been compared with experimental images obtained at low voltage under air and helium gases. The variation of image quality at low voltage has confirmed the interest of helium for use in a Field Emission Gun SEM (FEGSEM) in high pressure (or low vacuum) conditions. q 2004 Elsevier Ltd. All rights reserved. Keywords: High pressure scanning electron microscope; Monte Carlo; Electron scattering; Electron profile; Skirting 展开
2018-11-27 12:36:26
437
0
- 急求英语达人帮忙翻译段文章,在线等谢谢
- The incorporation of silicon from the quartz-made growth chamber, characteristic of NIRIM-type reactor is insignificant in our samples, if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here), wh... The incorporation of silicon from the quartz-made growth chamber, characteristic of NIRIM-type reactor is insignificant in our samples, if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here), which supports the good quality of these films. The improvement of the crystalline quality of {111} films is explained by the weak ion bombardment of the sample during its growth outside the plasma ball. Raman measurements (not shown in this work) have also confirmed the high crystalline quality of our films, in particular in the low doping range. Very high boron concentrations (up to 5×1021 cm−3) have been reached at this growth position, outside the plasma ball. 展开
2010-03-12 07:46:42
452
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- 请帮忙翻译一下,拜托
- A new kind of TiO2 nanotube array/Ni(OH)2 (TiO2/Ni(OH)2) composite electrode with the storage ability of light energy was prepared by the deposition of Ni(OH)2 on the TiO2 nanotube array, which was synthesized by anodizing Ti foils in an HF... A new kind of TiO2 nanotube array/Ni(OH)2 (TiO2/Ni(OH)2) composite electrode with the storage ability of light energy was prepared by the deposition of Ni(OH)2 on the TiO2 nanotube array, which was synthesized by anodizing Ti foils in an HF aqueous solution. SEM and XRD results showed that Ni(OH)2 particles were well distributed on high density, well-ordered and uniform TiO2 nanotube arrays. The photoelectrochemical properties of the TiO2/Ni(OH)2 electrode were investigated in NaHCO3/NaOH buffer solution (pH 10) by means of UV–vis absorption spectra, cyclic voltammogram (CV) and photocurrent measurements. It was found that the TiO2/Ni(OH)2 electrode was highly sensitive to light and exhibited excellent photoelectrochromic properties. Upon UV irradiation, the photogenerated holes by TiO2 nanotube arrays can oxidize Ni(OH)2 to NiOOH, and thus the TiO2/Ni(OH)2 electrode can be photo-charged by light。1. Introduction Among many visible light photocatalysts, TiO2nanostructures have attracted much attention due to high photocatalytic activ-ity, nontoxicity, chemical stability and huge potential applications [1–6]. The TiO2 nanotube array is one of most attention-getting TiO2nanostructures because of large surface area and outstanding charge transport properties. TiO2nanotube arrays can be utilized in dye-sensitized solar cells[7–9], photocatalysis and hydrogen gas sensing [10]. So far, a variety of methods have been attempted to prepare TiO2 nanotube arrays, such as hydrothermal synthe-sis[11], Langmuir–Blodgett technique [12], solution casting [13] and anodization technique[10,14], etc. Among these methods, the anodization technique has many advantages of low cost, low tem-perature and easy to be scaled up to large-area preparation. Recently, anewkindof photo-functional systemwith theenergy storage ability has been developed by coupling TiO2 photosen-sitive electrode with energy storage materials. In Takahashi and Tatsuma’swork[15],aTiO2/Ni(OH)2bilayer thinfilmwas suggested for the oxidative energy storage. In this case, a redox-activep-type semiconductor Ni(OH)2is coupled withn-type TiO2photocatalyst to formap–njunction,WhenTiO2is illuminatedby light, holesgen-erated at the junction are separated from excited electrons, trans-ported into the bulk of Ni(OH)2and oxidized Ni(OH)2to NiOOH. Therefore, the oxidative energy storage system was constructed 展开
2012-11-13 20:08:52
490
1
- 帮忙翻译一下,万分感谢
- 说明一下860DSP是一个信号测量仪器的型号 Here is a good explanation of how the 860 in spectrum mode uses the different settings like dwell wide, narrow, and averaging to look at the spectrum data differently. 860 DSPI Spectrum Analyzer Set... 说明一下860DSP是一个信号测量仪器的型号 Here is a good explanation of how the 860 in spectrum mode uses the different settings like dwell wide, narrow, and averaging to look at the spectrum data differently. 860 DSPI Spectrum Analyzer Settings Explanation In the 860 DSPI there are 3 different and unique spectrum analyzer “Detectors”. These detectors may alter the view of a signals appearance, depending on which is selected. Each detector can show a different picture on the same signal because of the way the detector functions. An important selection to our spectrum analyzer is the amount of digital snap shots to be taken. This will be the amount of digital snapshots that is taken in the allocated bandwidth before showing a picture. With this said, the more sampling that is put into the spectrum analyzer the slower it will seem to update, but more opportunity to capture ingress and other interference that can happen inside a cable plant. Dwell Wide- Dwell Wide takes the largest snapshot out of the amount taken, then the 7.5 MHz spectrum is peak held as the 860 DSPI tunes across the selected frequencies in 250 kHz steps. Example: In Dwell Wide, with a 32 sampling rate set, this in turn means the 860 will dwell or sit on a portion of the spectrum defined above, take 32 snap shots, and then display the picture with the max amplitude before moving on to the next portion of bandwidth. Dwell Narrow- Dwell Narrow takes the largest snapshot out of the amount taken, then a 250 kHz spectrum slice is peak held as the 860 DSPI tunes across the selected frequencies in 250 kHz steps. The difference between Dwell Narrow and Dwell Wide is that Dwell Narrow only peak holds across a 250 kHz slice, where as Dwell wide peak holds the entire 7.5 MHz. Example: In Dwell Narrow, with a 32 sampling rate set, this in turn means the 860 will go to the first 7.5 MHz of the spectrum it will look at a 250 kHz slice of the 7.5 MHz and take its 32 samples. These 32 samples will be done in a peak hold fashion, then display the sample that contains the largest signal. Averaging: This detector when selected looks at a 7.5 MHz portion of the spectrum. When it tunes to the first 7.5 MHz portion of the spectrum, it takes into account how much sampling is selected, then takes it’s digital snapshots on the entire 7.5 MHz, averages those pictures together, then shows the final averaged picture. This detector is used for looking at large amounts of bandwidth. Example: In Averaging, with a 32 sampling rate set, this in turn means the 860 will go to the first 7.5 MHz of the spectrum, take it’s 32 digital snap shots, average those together, and show the average of the 32 snapshots. 展开
2010-12-10 08:46:08
519
2
- 50分!高手帮忙翻译一下
- LabVIEWisapowerfulandcomplexprogrammingenvironment.LabVIEWisshortforLaboratoryVirtualInstrumentEngineeringWorkbench.Itisapowerfulandflexibleinstrumentationandanalysissoft... LabVIEW is a powerful and complex programming environment. LabVIEW is short for Laboratory Virtual Instrument Engineering Workbench. It is a powerful and flexible instrumentation and analysis software development application created by the folks at National Instruments—a company that creates hardware and software products that leverage computer technology to help engineers and scientists take measurements, control processes, and analyze and storem data. National Instruments was founded over twenty-five years ago in Austin, Texas by James Truchard (known as Dr. T), Jeffrey Kodosky, and William Nowlin. At the time, all three men were working on sonar applications for the U.S. Navy at the Applied Research Laboratories at The University of Texas at Austin. Searching for a way to connect test equipment to DEC PDP-11 computers, Dr. T decided to develop an interface bus. He recruited Jeff and Bill to join him in his endeavor, and together they successfully developed LabVIEW and the notion of a “virtual instrument.” In the process they managed to infuse their new company—National Instruments—with an entrepreneurial spirit that still pervades the company today. Engineers and scientists in research, development, production, test, and service industries as diverse as automotive, semiconductor, aerospace, electronics, chemical, telecommunications, and pharmaceutical have used and continue touse LabVIEW to support their work. LabVIEW is a major player in the area of testing and measurements, industrial automation, and data analysis. For example, scientists at NASA’s Jet Propulsion Laboratory used LabVIEW to analyze and display Mars Pathfinder Sojourner rover engineering data, including the position and temperature of the rover, how much power remained in the rover’s battery, and generally to monitor Sojourner’s overall health. LabVIEW provides an extensive library of virtual instruments and functions to help you in your programming. It includes conventional program debugging tools with which you can set breakpoints, single-step through the program, and animate the execution so you can observe the flow of data. 毕业设计急用,望高手帮忙翻译一下 展开
2007-06-12 15:44:11
649
2
- 发酵设备题,急急急急急!!!帮忙解答
- 3.设计一年产20000吨味精(纯度99.5%)的发酵工厂(年生产天数按330记),工艺数据如下: 提取率:97%,产酸率为11%,发酵罐发酵周期为32小时,生产周期45小时;接种量为7%,种子培养时间16小时,生产周期为24小时,染菌率按1%估计。请计算: (1)若选... 3.设计一年产20000吨味精(纯度99.5%)的发酵工厂(年生产天数按330记),工艺数据如下: 提取率:97%,产酸率为11%,发酵罐发酵周期为32小时,生产周期45小时;接种量为7%,种子培养时间16小时,生产周期为24小时,染菌率按1%估计。请计算: (1)若选用公称容积为200M3发酵罐,发酵罐装填系数75%,则发酵罐数量应是多少?种子罐的公称容积和数量应是多少? (2)发酵温度为32ºC,每1M³发酵液每小时传给冷却器的Z大传热量为4.18×6000KJ/(M³.h),采用竖式蛇管换热器,K=4.18×500KJ/(M².h.C),冷却水由20ºC升至27ºC,假设产生的热量全部传给冷却器,求单位时间内冷却水的用量及需要多大冷却面积。 我的误区如下: (1)发酵罐 N=nt/24+1 n为每24小时进料罐数 n是否应为生产周期/24,而t为发酵周期,则 N=(45÷24)×32÷24+1=3.5 种子罐N=(24÷24)×16÷24+1=5/3 罐数怎么为分数和小数? 而种子罐公称容积我就不会了,请告诉我一下。 (2)对于冷却水耗量W=Q/C(T′-T) 但比热C如何求? .现有30M³酵罐一台,实际容量20M³若料液(密度为1046kg/M³,比热为3.94KJ/Kg)采用连消方式进行灭菌,整个灭菌在1.5小时完成。 (1)请计算采用连消灭菌流程时,120ºC灭菌所需蒸汽用量及蒸汽管直径?(蒸汽间接加热,假设无热量损失,蒸汽压力表压0.4MPa,该压力下蒸汽的焓为2747.27KJ/Kg,蒸气密度为2.62kg/M³,蒸汽在管道中的流速为42m/s,物料进连消系统加热器的温度为70ºC) 题中用的应该是热量的恒等计算 冷却水耗量W=Q/C(T′-T)则Q=C(T′-T)×W 料液的温差是120-70吗?那蒸汽的温差在哪? 展开
2018-11-18 09:34:23
367
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- 请高手帮忙翻译翻译啊,通顺即可,完全用翻译器的请绕道~谢谢~~
- Interim Report on Pressure Effect on Waxy-Crude Pipeline-Restart Conditions Investigated by a Model System Yield Phenomenon and Pipeline Restart. Yield stress is the threshold stress required to initiate flow of a viscoplastic ᤙ... Interim Report on Pressure Effect on Waxy-Crude Pipeline-Restart Conditions Investigated by a Model System Yield Phenomenon and Pipeline Restart. Yield stress is the threshold stress required to initiate flow of a viscoplastic fl uid. Waxy crude-oil gels are viscoplastic in nature and exhibit time-dependent Bingham plastic flow behavior during restart under imposed constant pumping pressure. The yielding process of a gel is a complicated process, and different models have been proposed to explain this phenomenon. Wardhaugh and Boger (1991) defined yield stress as the “shear stress at which the gelled oil ceases to behave as a Hookean solid.” Chang et al. (1998) adopted a three-yield stress concept: elastic limit (which defines the onset of viscoelastic creep), static (where fracture occurs), and dynamic yield stress (which describes the broken down structure after yielding). Among these three, only the static yield stress is used to design the restart pump for initiation of flow after shut-in. Several types of apparatus and different techniques (direct and indirect) have been used for determining the yield stress. The results obtained and conclusions regarding their validity and usefulness differ widely. Setups used are capillary U-tubes, large pilot pipeline facilities, lab-scale model pipelines, controlled-stress or -shear rotational rheometry experiments (CSR). The capillary tube and pilot-scale pipeline measurement tech-niques have been criticized as being unsuitable for understanding the yielding behavior of statically cooled waxy crude oils because of nonlinear pressure distribution, pipe compressibility effects, porosity of wax structure, and contraction effects (Wardhaugh and Boger 1991). However, the authors added that an exception to their conclusion was the work by Ronningsen (1992), where reasonable estimates of the yield stress as compared to model pipeline results were obtained with a constant stress rheometer. Recently, Lee et al. (2007) also reported the consistency between the concentric rheometer and a model pipeline system. In fact, model pipeline test is the most common laboratory method resorted to in gel strength measurement because of its geometrical resemblance to the real pipeline. In such tests, gel is formed under controlled conditions (cooling rate, aging temperature, etc.) and pressure is then slowly applied on one end of the gel until flow is observed. The gel strength (τ) is then calculated by: 公式1 展开
2012-05-03 00:39:39
435
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- 英语高手帮忙翻译段英文 谢谢!!
- In this paper, the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation. Under visible light irradiation, the doped TiO2 nanocatalysts demonstrated ... In this paper, the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation. Under visible light irradiation, the doped TiO2 nanocatalysts demonstrated higher activity than the commercial Dugussa P25 TiO2, allowing more efficient utilization of solar light, while under sunlight, P25 showed higher photocatalytic activity. According to the X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV–vis spectra analyses, it was found that both the nanosized anatase structure and the appearance of new absorption band in the visible region caused by nitrogen doping were responsible for the significant enhancement of OG degradation under visible light. In addition, the photosensitized oxidation mechanism originated from OG itself was also considered contributing to the higher visible-light-induced degradation efficiency. The effect of the initial pH of the solution and the dosage of hydrogen peroxide under different light sources was also investigated. Under visible light and sunlight, the optimal solution pH was both 2.0, while the optimal dosage of H2O2 was 5.0 and 15.0 mmol/l, respectively. Azodyes, which are characterized by the presence of one or more azo bonds ( N N ), are among the most notorious widespread environmental pollutants associated with textile,cosmetic, food colorants, printing, and pharmaceutical indus-tries. Because of their non-degradability, toxicity, potential mutagenicity and carcinogenicity, wastewaters originating from these dyes production or application industries pose a major threat to the surrounding ecosystems and human beings’ health.[1–3].Environmental concerns and the need of meeting the strin-gent international standards for rejecting wastewaters has made the development of novel and cost-effective processes for the purification of azo dyes effluents an issue of major technological importance. 展开
2011-05-06 19:00:45
520
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- 帮忙翻译一哈文章(翻译成英语)
- 摘 要 本文采用环氧氯丙烷、乙二胺、对氨基苯磺酸等物质合成了一种新的活性染料耐氯水牢度提升剂,并对经多种类型活性染料染色的织物进行固色处理,再进行氯漂处理。经过对织物K/S值、Z大吸收波长λmax、摩擦牢度及皂洗牢度的分析,确定提升剂处理的Z佳工... 摘 要 本文采用环氧氯丙烷、乙二胺、对氨基苯磺酸等物质合成了一种新的活性染料耐氯水牢度提升剂,并对经多种类型活性染料染色的织物进行固色处理,再进行氯漂处理。经过对织物K/S值、Z大吸收波长λmax、摩擦牢度及皂洗牢度的分析,确定提升剂处理的Z佳工艺。实验表明:织物的K/S值有很大的提高,织物的耐氯牢度大致可提升2~3级,并且不会改变织物色光。但是提升剂对色织物的摩擦牢度和皂洗牢度影响不是很大。 关键词:活性染料;耐氯色牢度;提升剂;染色工艺 展开
2008-05-28 14:59:35
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