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谁可以帮我翻译下这段话成英语,急用,求英语高手

562826658 2008-07-14 09:45:18 375  浏览
  • 本文简述了国内外有关大气生物气溶胶的研究现状及其展望。主要围绕生物气溶胶的研究意义,生物气溶胶的研究历史,生物气溶胶的种类及来源,生物气溶胶的浓度及粒径分布特征,生物气溶胶采样技术与检测,以及对生物气溶胶未来发展的展望等六个方面进行了阐述。... 本文简述了国内外有关大气生物气溶胶的研究现状及其展望。主要围绕生物气溶胶的研究意义,生物气溶胶的研究历史,生物气溶胶的种类及来源,生物气溶胶的浓度及粒径分布特征,生物气溶胶采样技术与检测,以及对生物气溶胶未来发展的展望等六个方面进行了阐述。ZD介绍生物气溶胶的分布特征。 展开

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  • 凉生ZSH 2008-07-16 00:00:00
    楼主你看清楚啊!要是把pkq那家伙的答案设为Z佳,我真要无语了! 神龙式翻译的就可以用了,虽然看得我晕头转向。

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  • 昆昆哥哥 2008-07-15 00:00:00
    This article described the domestic and foreign related atmospheric biology aerosol research present situation and the forecast briefly. Mainly revolves the biological aerosol the research significance, the biological aerosol research history, the biological aerosol type and the origin, the biological aerosol density and the grain-size distribution characteristic, the biological aerosol sampling technique and the examination, as well as the forecast which will develop in the future to the biological aerosol and so on six aspects have carried on the elaboration. With emphasis introduction biology aerosol distributed characteristic.

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  • caihansong1 2008-07-15 00:00:00
    This paper describes the atmosphere at home and abroad on the study of biological aerosol Current Status and Future Prospects. Focus on the significance of aerosols, biological aerosol of history, of the types and sources of aerosols, biological aerosol concentration and size distribution characteristics, biological aerosol sampling and testing, and the future development of biological aerosol Prospects such as the six areas were also discussed. Focus on the distribution of biological aerosols.

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谁可以帮我翻译下这段话成英语,急用,求英语高手
本文简述了国内外有关大气生物气溶胶的研究现状及其展望。主要围绕生物气溶胶的研究意义,生物气溶胶的研究历史,生物气溶胶的种类及来源,生物气溶胶的浓度及粒径分布特征,生物气溶胶采样技术与检测,以及对生物气溶胶未来发展的展望等六个方面进行了阐述。... 本文简述了国内外有关大气生物气溶胶的研究现状及其展望。主要围绕生物气溶胶的研究意义,生物气溶胶的研究历史,生物气溶胶的种类及来源,生物气溶胶的浓度及粒径分布特征,生物气溶胶采样技术与检测,以及对生物气溶胶未来发展的展望等六个方面进行了阐述。ZD介绍生物气溶胶的分布特征。 展开
2008-07-14 09:45:18 375 3
哪位英语高手帮我翻译几个地名?
以下几个地名和句子:(是可书面应用的,不要口语,如是口语请注明) 1. 潘家园旧货市场 2. 长安大戏院 3. 西单图书大厦 4. 京广ZX 5. 什刹海 6. 秀水 7. 建国门地铁站 8. 百年奥运,梦想成真。
2005-08-23 00:00:40 273 3
环境英语文献翻译 急用
Thereisagrowinginterestindeterminingmercury(Hg)levelsinthemarineenvironmentaswellasinfishforhumanconsumption.Methylmercury(MeHg)inparticularisthemosttoxicandbioaccumulati... There is a growing interest in determining mercury(Hg) levels in the marine environment as well as in fish for human consumption. Methyl mercury(Me Hg)in particular is the most toxic and bioaccumulative form of mercury in food webs and it is the predominant chemical form making up 80%-90% of the total mercury present in fish muscle tissue.Hence,fish and other organisms at the end of the food chain constitute the major source of MeHg in the human . As outcome of this risk,MeHg has been classically monitored in fish, and methodologies for mercury speciaion have increased significantly since the early 1990s. Currently, microwave-assisted extraction (MAE) has provided an efficient alternative strategy to conventional techniques for solvent extraction of a large amount of organometals compounds.The analytical techniques most frequently applied for Hg speciation analysis involve GC(GasChromatography) , GC-CICP-MS(Gas Chromatography -CInductively Coupled Plasma Mass Spectrometry) supercritical fluids chromatography (SFC),ion chromatograph(IC), HPLC-CCVAAS(High Performance Liqui Chromatography-Cold Vapor Atomic Absorption Spectrometry) or ICP-MS systems .Several authors recommended a back-extraction of mercury species from organic solvents to cysteine or sodium thiosulphate aqueous solutions .Because MeHg is the most common organomercury compound in biological materials ,here we offer a new simple and cost-effective method to determine MeHg. Basically, this method combines the microwave assisted extraction followed by clean-up with cysteine acetate solution and MeHg quantification by a direct mercury analyzer (DMA). 展开
2009-05-18 11:22:05 322 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 10:19:02 513 2
哪位英语高手帮帮忙,翻译英语文章!谢谢1
英语高手,谢谢了!ThecatalystsupportwasimpregnatedwithacetonesolutionofRuCl3.nH2Ouptorutheniumcontentof4w%,understirringfor6h.Afterconcentrationinarotaryevaporator,theobt... 英语高手,谢谢了! The catalyst support was impregnated with acetone solution of RuCl3.nH2O up to ruthenium content of 4 w%, under stirring for 6 h. After concentration in a rotary evaporator, the obtained material was dried in air at 383 K overnight and subjected to preliminary reduction with a 1N2/3H2 stream at 698 K, and then cooled in 1N2/3H2 atmosphere. The potassium promoter was introduced by incipient wet impregnation with KNO3 solution at room temperature with molar ratio of K+ /Ru = 5/1. After stirring for 6 h and infusing for 24 h, the samples were dried in a rotary evaporator at 343K and then dried in the air at 383K for 12 h. The ammonia synthesis activities of the catalysts with about 35-60 meshes were evaluated by 1N2/3H2 flow of 2100 mL/h at 0.2 MPa from 623 K to 773 K. The amount of effluent ammonia was determined by titration method. As we can see from the Table 1, under the same reaction conditions, the catalyst K-Ru/Mg(Al)O exhibited the highest activity, 38.42 mL NH3•h-1•g-1 at 673K, 3 times more active than K-Ru/MgO, 12.88 mL NH3•h-1•g-1 at 748K. This means that selection of supports takes great effects on the activity of catalysts. The ammonia synthesis activity of different supports are K-Ru/Mg(Al)O > K-Ru/Mg-Al-Ca(1) > K-Ru/Mg-Al-Ca(2) > K-Ru/Al2O3 > K-Ru/CaO > K-Ru/MgO. The combinatorial supports showed higher activity than single supports. However, the sequence of temperature corresponding to the highest activity is just opposite to that of the activity. The optimal temperature for K-Ru/Mg(Al)O, 673K, is the lowest of all, on the contrary, that of K-Ru/MgO is the highest, 748K. The Mg(Al)O has a larger surface area of 140.95 m2•g-1 , similar to γ-Al2O3, 110-180 m2•g-1 . The other two combinational supports have little surface areas but higher activities than Al2O3. It suggested that the activity of the catalyst is influenced not only by the dispersion of Ru crystals but also by the crystal structure of the supports. Table 1 Ammonia synthesis activities and BET surface areas Catalyst Optimal activity Highest activity Surface area of support temperature(K) (NH3/mL•h-1•g-1) (m2•g-1) K-Ru/MgO 748 12.88 K-Ru/Al2O3 698 23.79 K-Ru/CaO 723 23.22 K-Ru/Mg(Al)O 673 38.42 140.95 K-Ru/Mg-Al-Ca(1) 698 30.75 29.10 K-Ru/Mg-Al-Ca(2) 698 26.12 14.69 Acknowledgments This work was supported by the NNSF of China (20273053, 20023001 and 29933040), the 973 Programming (001CB108906) and the NSF of Fujian province (E0310001). References 1. C. J. H. Jacobsen, S. Dahl, P. L. Hansen et al., J. Mol. Catal. A, 2000, 163, 19. 2. F. Cavani, F. Trifiro, A. Vaccari, Catal. Today, 1991, 11, 173. 展开
2018-11-14 18:00:49 276 0
请英语高手帮我翻译下面盐雾测试报告里面部分内容
1 外观评级,试样表面外观的变化. 2 腐蚀率评定等级的判定等级的判定腐蚀率. 3 无变化. 4 轻微到中度的变色. 5 严重变色到极微的失光. 6 轻微的失光或出现极轻微的腐蚀产物. 7 严重失光或在试样局部表面上部有薄层的腐蚀产物或点蚀. 8 有腐蚀物或点蚀且... 1 外观评级,试样表面外观的变化. 2 腐蚀率评定等级的判定等级的判定腐蚀率. 3 无变化. 4 轻微到中度的变色. 5 严重变色到极微的失光. 6 轻微的失光或出现极轻微的腐蚀产物. 7 严重失光或在试样局部表面上部有薄层的腐蚀产物或点蚀. 8 有腐蚀物或点蚀且其中之一集中分布在整个试样表面上. 9 整个表面上布有厚的腐蚀产物,并有深的点蚀. 10 整个表面布有非常厚的腐蚀物和点蚀,并有深的点蚀. 11 出现基体金属腐蚀. 展开
2007-09-05 04:44:20 425 1
有英语高手或者会labview的高手帮忙翻译下
LabVIEW就是基于虚拟仪器的开发环境,本文阐述了基于虚拟仪器技术在阻抗参数测量中的应用,根据电子测量的基本原理、计算方法和流程,利用了LabVIEW的特有语言—G语言—对被测对象进行... LabVIEW就是基于虚拟仪器的开发环境,本文阐述了基于虚拟仪器技术在阻抗参数测量中的应用,根据电子测量的基本原理、计算方法和流程,利用了LabVIEW的特有语言—G语言—对被测对象进行程序编译、运行、修改并Z终显示运行结果 有高手帮忙翻译下 展开
2009-06-12 22:57:18 315 1
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 08:49:34 415 1
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 19:00:45 344 2
请教高手这段话怎么翻译
Therefore, combining the results from the SEM, EDS, and XRD pattern, the phase composition of GWZM852 alloy could be inferred to include an a-Mg matrix and large block-shaped Mg12Zn(Y,Gd) phases distributed in a discontinuous network wi... Therefore, combining the results from the SEM, EDS, and XRD pattern, the phase composition of GWZM852 alloy could be inferred to include an a-Mg matrix and large block-shaped Mg12Zn(Y,Gd) phases distributed in a discontinuous network with some small block- and rod-shaped eutectic phases scattered at the edge of the Mg12Zn(Y, Gd) phases. 展开
2013-03-13 08:33:03 371 4
求专业的英语达人帮忙翻译下 万分感谢
Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding ... Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding the sensor warraty). Positive pressure applications: If the sample pressure is greater than 30 psign an external pressure regulator(optional) is required upsteram of the analyzer to control of sample flow.a pressure regulator with a metallic diaphragm is recommended to prevent high oxygen reading that cuold result from the use of diaphragms constructed of more gas permeable materisls. If other optionoal sample system components such as coiled metal tubing(samples must be colled to at least 35-40℃ for continuous use),coalescing filters ,scrubbers,etc.are required install the pressure rugulator after the coiled tubing and bofore the other components and the analyzer.a scrubber requires a flow valve upstream for optimum efficiency and response time and that the analyzer flow valve is opened completely. Atmospheric or slightly negative pressure applications: For accurate high ppb and/or low ppm range measurements,an optional simple pump is required downstream of the analyzer to draw the sample through the analyzer.The cacuum drawn on the analyzer and sensor should not exceed 4”of water. Caution:Use ofpump downstream of the sensor requires the floe control valve upstream of the sensor be completely opened to avoid drawing ercessive vacuum in the sensor,which can damage the sensor. If pump over-loading(due to the limitation of low flow rate of the sample gas)is a comsideration,a second throttle valve on the pump’s inlet side may be necessary to provide a bypass path,as illustrated below,to prevent the pump from over-loading and over-heating while miantaining the required sample flow rate within the above-mentioned parameters 展开
2010-05-07 12:23:38 420 3
请问各位英语高手,对开多叶调节阀英语怎么翻译啊?
 
2010-08-12 09:01:12 415 2
英语课文翻译
Ifyouhadtochoosethesinglemostimportantdiscoveryofthe20thcentury,youwouldhavearealdilemmaonyourhands.Injust100years,theworldchangedcompletely.Amazingdiscoveriesweremadeinm... If you had to choose the single most important discovery of the 20th century, you would have a real dilemma on your hands. In just 100 years, the world changed completely. Amazing discoveries were made in medicine, communications and transport, not to mention our knowledge of the world and space . Medical advances ranged from discovering the causes of diseased under microscopes to surgical procedures replacing diseased organs with donated ones.Communications changed with the introduction of mobile phones and the way we correspond went from writing letters to emailing. We started flying around the world and meanwhile, scientists figured out how to spilt the atom, previously thought to be the smallest particle of matter in the universe. Although it is impossible to choose the most important discovery, it is possible to single out a few pioneers of the 20th century.Here are five of them. 展开
2012-02-02 01:10:54 437 6
LABVIEW 虚拟仪器 高手帮我翻译下好吗?
4.VIRTUALINSTRUMENTAfoundationofthecontrolsystemdesignistheconceptofvirtualinstruments.Intraditionalobservatorysystemdesign,instrumentsaretypicallyconsideredentitieswhose... 4. VIRTUAL INSTRUMENT A foundation of the control system design is the concept of virtual instruments. In traditional observatory system design, instruments are typically considered entities whose design and components are fixed well in advance of actual use of the instrument. The approach works quite well when the role of the instrument is well understood with respect to the experiments it is to be used for. It also fits well with a system design where the instruments must be mounted on the telescope (e.g. mounting at the Cassegrain focus), or exposed to the external environment - since the instrument is static, it can be more easily enclosed. However, this approach has some drawbacks in a laboratory style environment such as that provided by the ATST multiple-bench coude lab. In particular, providing the flexibility to explore new experiments results in a significant effort to adapt existing instruments to meet the requirements of the new experiment. The Virtual Instrument Model has been developed to address this issue, by abstracting the concept of an instrument from the specifics of the components used within that instrument. This allows the configuration of an instrument to be quickly adapted to meet the changes required by different experiments or changes to the laboratory environment. It should be noted that the virtual instrument is not a revolutionary concept but rather is the formalization of ideas often used in laboratory style experimentation. In the virtual instrument model, it is the experiment that drives the virtual instrument's 'design'. 4.1. EXPERIMENTS AND INSTRUMENTS Experiments are the heart of ATST operations and the control system is designed with this in mind. A laboratory style environment provides flexible support to carry out Experiments that are likely not understood or defined at the time the laboratory itself is designed. An Experiment undertaken at the ATST requires a Virtual Instrument. 不要机器翻译的 要人工的 谢谢大家 展开
2008-01-28 20:42:17 393 1
帮我翻译这段话,急需。有关石碱
石碱,出山东济宁诸处。彼人采蒿蓼之属,开窖浸水,漉起,晒干烧灰,以原水淋汁,每百引入粉面二、三斤,久则凝淀如石,连汁货之四方,浣衣发面,甚获利也。他处以灶灰淋浓汁,亦去垢发面。
2011-12-02 11:39:51 439 3
英语请人工翻译,
DARPA has been at the forefront of the aggressive FCS initiative. We are conducting demonstrations of advanced prototypes, including unmanned ground reconnaissance and attack platforms; low-cost tactical precision munitions; small UAVs t... DARPA has been at the forefront of the aggressive FCS initiative. We are conducting demonstrations of advanced prototypes, including unmanned ground reconnaissance and attack platforms; low-cost tactical precision munitions; small UAVs that support operations in urban and mountainous environments; and sensors that can detect vehicles camouflaged under dense foliage. A Defense Acquisition Board scheduled for May could allow FCS to enter System Development and Demonstration under Army management this year. This will enable the Army to field an FCS Unit for operational testing in FY 2008, with the first Unit of Action ready for operational deployment by 2010. DARPA is also conducting three unmanned air combatant programs: the Unmanned Combat Air Vehicle (UCAV) with the Air Force, UCAV-N with the Page 5 of 14 Navy, and the Unmanned Combat Armed Rotorcraft program with the Army. These aircraft will be teamed with manned systems on the ground and in the air to transform how the Air Force suppresses enemy air defenses, how the Navy suppresses enemy air defenses and conducts extended surveillance, and how the Army conducts armed reconnaissance and attack. 展开
2007-05-25 06:53:13 419 6
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 03:32:04 464 2
麻烦哪位英语牛人帮忙翻译下~~药学的 翻译成英语 谢谢了
目的 制备足浴液并对其进行质量考察。方法 采用正交试验优选苦参中苦参碱和紫草中紫草素的提取工艺,通过紫外分光光度法对苦参碱与紫草素的含量进行测定,并将苦参碱、紫草素、水杨酸、苯甲酸和硼酸按一定比例进行溶解实验。化学成分分析采用薄层色谱法及试管... 目的 制备足浴液并对其进行质量考察。方法 采用正交试验优选苦参中苦参碱和紫草中紫草素的提取工艺,通过紫外分光光度法对苦参碱与紫草素的含量进行测定,并将苦参碱、紫草素、水杨酸、苯甲酸和硼酸按一定比例进行溶解实验。化学成分分析采用薄层色谱法及试管实验法对苦参中苦参碱与紫草中紫草素进行化学成分检测。结果 通过薄层色谱法和试管实验法得出苦参碱为生物碱、紫草素为蒽醌。通过正交试验和紫外分光光度法选出Z优提取方案。通过溶解实验使中化学药物形成混悬液,Z后得到足浴液样品。结论 通过T浓度实验,溶解实验选用95%乙醇为溶媒。通过L9(33)正交实验确定Z佳提取工艺,即提取时间为30min,温度为60℃,乙醇浓度为60%,以苦参碱作对照品,用分光光度法测定其苦参碱得率3.07%。经过实验摸索,得到超声提取紫草工艺的Z佳条件,即乙醇浓度为70%,超声功率为400w,料液比为1:40时提取率较高。足浴液制备方法简便,有利于实际生产,降低能源、节约时间,有较大的开发利用价值和广泛的市场前景。 关键字:紫草;苦参;正交设计;薄层色谱 展开
2008-06-07 10:30:31 542 1
谁帮我翻译一下
LabVIEWTM(LaboratoryVirtualInstrumentEngineeringWorkbench)isapowerfulinstrumentationandanalysisprogramminglanguageforPCsrunningMicrosoftWindows,SunSPARCstations,AppleMaci... LabVIEWTM (Laboratory Virtual Instrument Engineering Workbench) is a powerful instrumentation and analysis programming language for PCs running Microsoft Windows, Sun SPARCstations, Apple Macintosh computers, Concurrent PowerMax, and HP-UX workstations. LabVIEW departs from the sequential nature of traditional programming languages and features a graphical programming environment and all the tools needed for data acquisition, analysis, and presentation. With this graphical programming language, called “G,” you can program in a block diagram notation, the natural design notation of scientists and engineers. After you create a block diagram program, LabVIEW compiles it into machine code. LabVIEW integrates data acquisition, analysis, and presentation in one system. For acquiring data and controlling instruments, LabVIEW supports RS-232/422, IEEE 488 (GPIB), and VXI, including Virtual Instrument Software Architecture (VISA) functions, as well as plug-in data acquisition (DAQ) boards. An instrument library with drivers for hundreds of instruments simplifies instrument control applications. For analyzing data, the extensive Analysis library contains functions for signal generation, signal processing, filters, windows, statistics, regression, linear algebra, and array arithmetic. Because LabVIEW is graphical in nature, it is inherently a data presentation package. LabVIEW can generate charts, graphs, and customized, user-defined graphics. 尽量翻的好一点,谢谢 能不能对GOOGLE自动翻译过的稍加修改下 展开
2008-03-24 08:56:44 518 4
电子,通信类专业英语求人工翻译,软件翻译的别来。
如题ThetermASICisoftenappliedtofull-customandsemi-customintegratedcircuits.Anotherclassofintegratedcircuitisthatofprogrammablelogic.Theearliestprogrammablelogicdevices(PL... 如题 The term ASIC is often applied to full-custom and semi-custom integrated circuits.Another class of integrated circuit is that of programmable logic.The earliest programmable logic devices(PLDs) were programmable logic arrays(PLAs).Like gate arrays,these consist of arrays of uncomitted logic,but unlike mask-programmable gate arrays,the configuration of the array is determined by applying a large(usually negative) voltage to individual connections. 展开
2009-12-04 01:55:39 305 2

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