实验仪器

a kind of design project of multifunction electric power quality gauged instrument based on virtual instrument is put forward in this article.this system integrates virtual instrument programming and power electronics together,to realize diverse signals of current electric power quality field allin one.the integrated signal generator unit which carries out the collection of high speed digital data,d/ a conversion and analog output in four channels,unsymmetrical synchro control fifo etc.by fpga are introduced,the flow of electric power system various signal which generates by vc programming is elaborated,and the structural design of signal amplification unit is analysed.the experiment text result shows that this gauged instrument has attained current advanced high grade of accuracy and it will accelerate the steps of electric power quality calibration because of its accuracy and versatility.

摘 要：提出一种基于虚拟仪器技术的多功能电能质量标定仪的设计方案，采用虚拟仪器编程技术和电力电子技术相结合实现集目前电能质量领域的多样信号于一体。介绍采用fpga实现高速数字量采集、d/a转换及4通道模拟量输出、非对称同步控制fifo等的集成信号发生单元，阐述利用vc编程实现的电力系统多样信号的产生流程，分析信号放大单元的结构设计。实验测试结果表明该标定仪达到目前先进的高精度等级，由于其准确性和多功能性将加快电能质量标定的步伐。

In addition, the Central Distribution Agent Kay also experiment with micro-organisms needed for the production of domestic and imported ancillary equipment, glass apparatus, chemical reagents, laboratory supplies and ancillary raw and auxiliary materials, such as, for example, ring-kai company was authorized to OXOID company in South China microbial agent tested products.

此外，环凯公司还代理经销微生物实验与生产所需配套的国产及进口仪器设备、玻璃仪器、化学试剂、实验室配套用品及原辅材料等，例如环凯公司被授权为OXOID公司中国华南地区微生物检验产品总代理。

A quantitative thermographic evaluation of the mouth was used to detect the first symptoms of the disease, which was proven to be highly effective identifying the onset of the development of a canker sore.

实验采用随机双盲，仪器使用定量热图仪检测溃疡的发生，该仪器能高敏感地探测到口腔溃疡的出现。

A new experimental apparatus has been developed for measuring the thermal conductivity of liquid by the two transient hot-wire method, which is based on the theory of one-dimensional unsteady heat conduction in infinite medium.

摘 要：采用双热线瞬态热线法研制出一套瞬态双热线液体导热系数测试装置，在阐述该测试仪器的基本原理和测试方法的基础上，就该仪器对乙醇、乙二醇、甘油和去离子水进行测试的实验情况及结果进行了分析与比较。

There are some problems or indistinctness in some textbooks, so students often make mistake s in understanding and experiment.

RLC串联谐振电路是电工学的基本电路之一，由于一些教材或讲义存在问题或讲述不清，使学生常常会在实验时出现一些错误，导致实验结果不正确或不准确，严重时还将造成仪器设备和实验电路的损坏。

The study of the distance education system of the college physics is a kind of alternant software of teaching. The system can improve knowledge and ability of students on Internet. Because it uses the object to show fabricated instrument,so we can finish the experiment by landing the distance education net.

大学物理实验远程教育系统是采用 3DMAXflashMX及网络编程技术开发的具有交互式的教学软件，该系统能使学生在Internet上，通过登陆远程教育网站，利用实物显示的虚拟仪器完成大学物理实验，提高学生的实验能力和学习兴趣。

According to the method of checkout and identification complying with laboratory quality control rules, we made the calibration tests on CEMS smokemeter. After the linear regression analysis of test results, we verified the correlation coefficient was more than 0.99 between FW56-1 smokemeter, which was made by ABB, Germany, and TH-880IV smokemeter, so the high measurement accuracy was confirmed. Moreover, with less than 90% stained space of lens, this instrument can still work accurately, so the probe has big pollution tolerance. It can totally meet the request of pollution online monitoring.

实验采取了符合实验室质量控制技术路线的校验、鉴定方法，对CEMS烟尘测量仪进行了标对实验，通过对实验结果进行线性回归分析，验证了德国ABB公司生产的FW56-1型烟尘测量仪与TH－880Ⅳ烟尘仪测量数据的相关系数均大于0.99，具有很高的测量精度，并且探头对污染的容忍能力特别强，在透镜污染小于90％的情况下对仪器的准确性没有影响，完全能满足污染源在线监测监控系统建设的要求。

The virtual instrument technology is applied to construct the new MPT measurement system.

而以功能灵活、扩展能力强、组建方便、成本低廉为特点的虚拟仪器技术正好可以满足这方面的需要，因此新的实验系统采用虚拟仪器技术构造。

Warwick Zhejiang Scientific Instruments Ltd is a professional manufacturer of plastic laboratory equipment and supplies private experiment, the production of a series of precision pipette, widely used in medical and health.

浙江华威科学仪器有限公司是一家专业生产实验室仪器及塑料实验用品的私营企业，生产的系列精密移液器，广泛使用于医疗卫生。

Through the experiments, the students must be familiar with the performance of electronic components and middle and small integrate circuit, be able to choose commonly used electronic instrumentation and experimental equipment correctly, master measuring skills and methods, learn skills of consulting and writing experimental reports, master skills of data processing, diagram protracting and analysis of experimental results.

熟悉电子元、器件及中小型集成电路的性能。正确选用常用电子仪器仪表和实验器材，掌握测量技巧和方法；学习查阅资料和编写实验报告的方法，掌握数据处理，图表绘制，实验结果分析的方法。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。