急！！高手教我用霍尔传感器制作电子秤！！高分

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告诉我详细的制作方法原理以及电路图...高手帮忙谢谢了！！！！

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急！！高手教我用霍尔传感器制作电子秤！！高分: 告诉我详细的制作方法原理以及电路图...高手帮忙谢谢了！！！！

英译汉－－给高分，急！！: Abstract The hollow cathode will be presented as a plasma source for reactive evaporation processes. The hollow cathode generates an arc discharge plasma. This contains a high portion of directed electrons with an enhanced mean energy， the... Abstract The hollow cathode will be presented as a plasma source for reactive evaporation processes. The hollow cathode generates an arc discharge plasma. This contains a high portion of directed electrons with an enhanced mean energy， the so called low voltage electron beam (LVEB). The mean energy of the LVEB， in the range of 11 eV， results in a very effective ionization of the gas and vapor particles. Consequently， very high plasma densities can be achieved， which corresponds to high particle densities in high-rate deposition processes. Furthermore， a high self bias potential of about 16 V is obtained on insulating substrates. For the coating of heat-sensitive substrates with high deposition rates a process with a low ratio between thermal load and deposition rate is necessary. The heat flux on plastic substrates 2 has been measured at the reactive Al evaporation process. The overall thermal load of about 4 W/cm related to a deposition rate of 100nm/ s is low in comparison to other processes. This makes the hollow cathode a favorable tool for the plasma-activated high-rate deposition. The oxide layers deposited by this process show dense and glassy structures even at comparatively low condensation 2 temperatures. This is caused by the high ion current densities in the order of 30 mA/ cm . The low ion energy determined by the self bias potential results in relatively low compressive stress below 100 MPa. The low thermal load and the moderate intrinsic stress of the layers makes the hollow cathode plasma-activated deposition (HAD) process the method of choice for the deposition of oxides as abrasion resistant layers on plastic films and sheets. Ó 1998 Elsevier Science S.A. All rights reserved. 1. Introduction Table 1 shows typical layer materials that have been deposited by the PMS–DMS process and the corre-In recent years， the importance of coating plastic sponding dynamic deposition rates. The dynamic deposisurfaces with oxides and nitrides has increased. Typical tion rate is defined for moving substrates as the product of applications are solar control and low-emissivity multilayer the layer thickness and the substrate transportation speed. systems for window panes and window films， antiabrasion The HAD (hollow cathode-activated deposition) process layers on plastic films， plastic sheets and plastic parts as is the combination of a high-rate evaporation process and a well as barrier layers for packaging films. high-density plasma activation using the hollow cathode 展开

jquery问题求高手高分求解

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2012-04-08 18:33:05 412 2

急急急！！跪求外贸高手解释！！！！！关于o型圈的尺寸问题！！高分！: 我的一个客户，是台湾的，要采购些o型圈，他发的excel文件里的尺寸描述是这样的： part no: material: quantity: 9，00 X 2，00 NBR 70 SHR BLACK 200，000 9，00 is outer size， 2，00 is the diameter. 我就是想问下，这个9，00是外径... 我的一个客户，是台湾的，要采购些o型圈，他发的excel文件里的尺寸描述是这样的： part no: material: quantity: 9，00 X 2，00 NBR 70 SHR BLACK 200，000 9，00 is outer size， 2，00 is the diameter. 我就是想问下，这个9，00是外径，2，00是线径吗？diameter是指的线径还是内径啊？如果不是的话，那又是指的什么意思啊？展开

化学物纯度分析. 高手请进.有高分: 我厂要进一批原料. 要分析其纯度. 请高手指点. 原料如下: 钛; 聚氯乙烯树脂(PVC);9004-2促发泡稳定剂;ADC发泡剂;荧光增白剂FP;增塑剂DOP; 重质碳酸钙. 或者此原料要ZD分析其某物质含量的方法.能回答真是不胜感激. 我把分数全给你.

高分求高手翻译，不要机械翻译: Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials，because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review fo... Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials，because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review focuses on the recent research advances in bimetallic DENs with respect to their synthesis，characterization，and applications as catalysts.Bimetallic DENs can be made mainly via three routes:co-complexation，sequential loading，and partial displacement.The research in bimetallic DENs has been significantly promoted by the advancement of characterization instruments.The performances of bimetallic DENs as homogeneous and heterogeneous catalysts in organic synthesis have been compared with both monometallic DENs and their physical mixtures.It is concluded that the synergistic electronic effect in bimetallic nanoparticles enhances their catalytic activities. 能翻译多少都可以的展开

高分！计算机、嵌入式高手进，万分感谢！！: cpu真正处理一个进程的时间，比如我们的cpu，当一个.exe程序需要处理时，不是一直占用cpu吧，我原来听老师说真正占用cpu时间只有很少的一段。但是持续一直运行，不占cpu如何继续下去，是不是内存？问题1：打开一个realplay播放器看一部电影，是不是从开始一... cpu真正处理一个进程的时间，比如我们的cpu，当一个.exe程序需要处理时，不是一直占用cpu吧，我原来听老师说真正占用cpu时间只有很少的一段。但是持续一直运行，不占cpu如何继续下去，是不是内存？问题1：打开一个realplay播放器看一部电影，是不是从开始一直到结束1个多小时一直占用cpu？我觉得占cpu只有很少的一段时间。大侠可否详细给小弟说明下，谢谢啊! 问题2：是在S3C2410平台上可以同时打开多少个madplay播放器运行？问题3：ARM9的指令周期大约是7.6ns（内核时钟为120MHz时），是不是看一个程序的执行要多少条指令，那么这个程序就占用多长时间的CPU？我写论文对这些很困惑，要是大写可以很好地解决我的问题，我可以再加200分！拜谢！！展开

用称重传感器DIY电子秤: 网上有卖150KG的电阻应变式称重传感器，、我自己有单片机和液晶，如果只买传感器，还差不差一此其它的外围器件？思路是怎么样的？

高分请高手帮忙翻译英文文献资料（4）: Whenliquidisheateditevaporates.Theevaporationprocessisdependentonpressure，temperatureandcompositionoftheliquidandgas.Gascanalsocondense.Inadditionthereisaconvectiveheattr... When liquid is heated it evaporates. The evaporation process is dependent on pressure， temperature and composition of the liquid and gas. Gas can also condense. In addition there is a convective heat transfer between the liquid and gas zone that must be considered. The surfaces in the gas zone also radiates from the shell to the liquid. During the blowdown process mass is usually evacuated from the gas zone， but also liquid might be released. The rate of release is dependent on density and pressure as well as the release area. As pressure and temperature change， the properties of all materials change. This has to be considered in a prediction of a blowdown process. The main purpose of a blowdown process is as earlier stated to maintain integrity of the equipment. The strength properties of the shell are the key factor on that matter. The strength is dependent on the inside pressure as well as the support forces. If the exposing forces produce stress that exceeds the ultimate tensile stress (UTS) in some regions， the integrity of the equipment is no longer maintained. In the design phase of a process plant， these aspects are crucial and must be included as a dimensional factor. For that reason prediction of the blowdown process is essential. Lately some new standards has been introduced to the industry on this matter [3] and [4]. VessFire [1] and [2] is a multi physics system designed for calculation of this kind of problems. It has been applied for some time in the oil and process industry on many projects. The system satisfies the requirements for predictions outlined in [3] and [4]. It includes all aspects described above including integrity of the shell. As part of the verification process some experiments where performed. Some of the experiments are presented here. EXPERIMENTAL STUDY The purpose of the experiments was to investigate the evaporation process and the heat transfer to the liquid and vapour. In a complex system it is important to reduce unknown parameters as far as possible. Exposure from a flame is difficult to control. Flux measurements are point values and not necessarily representative for the average exposure. In order to control the heat exposure it was decided to apply an electric heating system. The system and the verification of the system is described in [5]， [6] and [8]. The furnace was built inside a supporting tube. Figure 2 shows a general arrangement of the experimental outfit. A 0.05 mm stainless steel foil formed as a tube， 300 mm in diameter， generated the heat. The power supply was based on a 3-phase alternating current system giving 48 Volt output as maximum. The top exposure had a limit of 300 kW. The foil had a surface of about 1 m2， giving a heat flux up to 300 kW/m2. The power input could be continuously regulated from zero to maximum load. Each experiment was started from zero and brought up to the required load within a few seconds. After that the surface temperature of the heating foil was kept constant during the exposure period. Experiments with both dry objects as well as water filled object were performed. In this paper only water filled experiments are presented Figure 2 General arrangements drawing of the experimental furnace including the specimen and its support Figure 3 Illustration of the heating unit. The black part is copper conductors for the foil. The grey part is the heating foil exposing the specimen. The foil is equipped with thermo-elements all marked H， except H5 which is the temperature in a copper ring and H6 which is the temperature between the insulation and the supporting tube. 展开

高手帮我看一下我爸的这个心电图（高分）: 高手帮我看一下我爸的这个心电图，这几天我爸老是心慌，胸闷，有时候还头晕，去县医院住了半个月的医院，出院后还是没有缓解……高手帮我看一下这个心电图，我爸的心脏到底怎么了？问... 高手帮我看一下我爸的这个心电图，这几天我爸老是心慌，胸闷，有时候还头晕，去县医院住了半个月的医院，出院后还是没有缓解…… 高手帮我看一下这个心电图，我爸的心脏到底怎么了？问题大吗？住院期间医生说我爸有肺气肿…… 回答的好的我加分！Z大量的加……谢谢另外，医生给的药是（口服的）：丹参滴丸、盐酸地尔硫卓片、藻酸双酯钠片、谷维素片、阿司匹林肠溶片、展开

加速度传感器输出（急，在线等，给高分）: 远东测振（原北京测振仪器厂）的YDI-37内装电路加速度计的输出有人了解吗？网址是这个：http://www.vmif.com/product7.html 与技术支持交流得到的是：输出为交流电压信号，正负5V范围。关键是不理解这个交流电压信号输出，以前用到的都是直流输出的。请知情... 远东测振（原北京测振仪器厂）的YDI-37内装电路加速度计的输出有人了解吗？网址是这个：http://www.vmif.com/product7.html 与技术支持交流得到的是：输出为交流电压信号，正负5V范围。关键是不理解这个交流电压信号输出，以前用到的都是直流输出的。请知情人帮忙解答一下。谢谢了。在线等！展开

LED透镜发光角度，急，高分求解！: LED投光灯，我用的透镜角度是90度的，灯具做成以后，灯具距墙面2米，光斑只有2米的直径，请问这是为什么，因为按着数据往里套的话，灯具发光点与墙面之间距离作为三角形的一条边，那么... LED投光灯，我用的透镜角度是90度的，灯具做成以后，灯具距墙面2米，光斑只有2米的直径，请问这是为什么，因为按着数据往里套的话，灯具发光点与墙面之间距离作为三角形的一条边，那么光斑的半径1米也可以作为三角形的另一条边，问题是现在短边是长边的一半，那么就说明这个角度是30度，这是灯具整体发光角度的一半，那么乘以2以后也就是60度，我就奇怪，为什么90度的透镜出来的效果却是60度的角度呢？而且光斑直径2米，我都已经算到快不亮的区域了，Z亮的区域也就1米多，因为我现在就算直径是2米我还没办法给客户交代过去：90度透镜出来的是60度（其实客户拍的图的效果看比较亮的部分直径也就是1米，他算的角度更狠直接说我用30度透镜要我赔偿呢）希望高手能仔细的帮我解决这个问题，我可以多给你分，我换几个号给分，谢谢了，真的很急，谢谢谢谢展开

逻辑难题高手帮忙急。。。。。: 有3顶白帽子和2定黑帽子。让甲、乙、丙3人同向列成一队，然后分别给他们各戴上一顶白帽子。丙可以看见甲乙，乙可以看到甲，甲则看不到乙丙。他们3人中，谁可以正确推导出自己头上所戴... 有3顶白帽子和2定黑帽子。让甲、乙、丙3人同向列成一队，然后分别给他们各戴上一顶白帽子。丙可以看见甲乙，乙可以看到甲，甲则看不到乙丙。他们3人中，谁可以正确推导出自己头上所戴的帽子的颜色？答案是甲，我想知道为什么？？？展开

数字式钳形电流表是霍尔传感器制作的吗:

急！！金和衡器电子秤，型号是acs30型，电子秤怎么扣秤的跪谢:

哪位高手能教我使用ST178光电传感器或者电路图谢谢啊:

高分求高手！投影仪的红色变成了黑色: 投影仪的影像红色部位变成了黑色，求高手，具体是什么原因？能否修理好？不懂的人请不要回帖。VGA线有3条都换过，不是线的问题。在网上搜了一下，发现不少投影仪都有这样的问题。... 投影仪的影像红色部位变成了黑色，求高手，具体是什么原因？能否修理好？不懂的人请不要回帖。 VGA线有3条都换过，不是线的问题。在网上搜了一下，发现不少投影仪都有这样的问题。展开

高手帮忙翻译一工科英文！！高分大谢！: Figure 2 SEM micrographs of worn seat insert surface of engine #6175 after 1474 hours of testing. The arrows and labels indicate the locations of EDX analysis. The same adhesion phenomenon occurs on the valve seat surfaces. Figure 4 show... Figure 2 SEM micrographs of worn seat insert surface of engine #6175 after 1474 hours of testing. The arrows and labels indicate the locations of EDX analysis. The same adhesion phenomenon occurs on the valve seat surfaces. Figure 4 shows SEM micrographs of the worn exhaust valve seat surface of engine #6175 after 1474 hours of testing. The valve material is Stellite 6 faced 23-8N (solution treated and aged). The arrows in Figure 4b indicate the locations of EDX analysis. Note the pits and deposits on the worn seat surface. Figures 5a shows the EDX spectrum of spot A on Figure 4b showing adhered insert material. Note molybdenum and manganese in the spectrum. Figure 5b shows the EDX spectrum of spot B in Figure 4b showing both adhered insert material and oil deposits. Note molybdenum.， phosphorous， chlorine， calcium， and zinc in the spectrum. Other valves from different engines labeled as "adhesion" in Table 2 share this typical adhesive phenomenon. The adhesive wear mode appears to predominate at valve seat interfaces with high asperity contact stresses or high combustion pressure. The surface roughness can contribute to adhesion significantly. Valves faced with Stellite alloy show less adhesive wear than unfaced valves， Table 2. The presence of high melting point phases， such as carbide or ceramic compounds in the contacting materials is believed to help prevent microwelding or adhesion related wear. Shear strain， also known as radial flow， is defined as the first derivative of the displacement， i.e.， . Figure 6 [8]. Shear strain controlled wear can characterized as a surface plastic deformation process. The wear is the result of the shear strain on the seat surface exceeding the plasticity limit of the material. The material is then detached or delaminated from the seating surface as wear particles. The typical appearance of shear strain controlled wear are ridges and/or radial flow of material on valve seats and inserts. Shear strain controlled wear sometimes is associated with adhesion. 展开

Emodio无法识别MP4设备，急！高分求助！: 之前安过一次emodio后来删，今天重新装了，把MP4连接到电脑上emodio识别不了，便携设备一直是灰色，怎么弄啊，哪位高手帮个忙啊！我电脑系统是vista的

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