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。

The calculations show that the principle formula error have small influence on the aberrations of an optical system, but as the stundard measurement of a refractive index, so great principle formula error is not allowable.

这样，虽然仪器本身具有高精度的测试性能，但原理公式误差大大地超过了仪器的测试精度，导致错误的测试结果。因此指出原理公式误差，评价其大小，重新推导测量绝对

Let us settle ourselves, and work and wedge our feet downward through the mud and slush of opinion, and prejudice, and tradition,and delusion, and appearance, that alluvion which covers the globe,through Paris and London, through New York and Boston and Concord,through Church and State, through poetry and philosophy and religion, till we come to a hard bottom and rocks in place, which we can call reality, and say, This is, and no mistake; and then begin,having a point d'appui, below freshet and frost and fire, a place where you might found a wall or a state, or set a lamp-post safely,or perhaps a gauge, not a Nilometer, but a Realometer, that future ages might know how deep a freshet of shams and appearances had gathered from time to time.

让我们定下心来工作，并用我们的脚跋涉在那些污泥似的意见、偏见、传统、谬见与表面中间，这蒙蔽全地球的淤土啊，让我们越过巴黎、伦敦、纽约、波士顿、康科德，教会与国家，诗歌，哲学与宗教，直到我们达到一个坚硬的底层，在那里的岩盘上，我们称之为现实，然后说，这就是了，不错的了，然后你可以在这个point d'appui 之上，在洪水、冰霜和火焰下面，开始在这地方建立一道城墙或一个国土，也许能安全地立起一个灯柱，或一个测量仪器，不是尼罗河水测量器了，而是测量现实的仪器，让未来的时代能知道，谎骗与虚有其表曾洪水似的积了又积，积得多么深哪。

Intelligent nuclear instrument has been a dominant developing direction of radioactivity measurement instrument. The instrument for radon measurement of air pulse ionization chamber, based on the theory that alpha rays decayed by radon and its progeny can ionize the air molecules, can measure the radon concentration accurately.

智能核仪器已成为放射性测量仪器发展的一个主导方向，利用氡及其子体衰变放出α射线能使空气分子电离的理论设计的空气脉冲电离室α测氡仪可以准确地测量空气中的氡浓度。

Resultants of the VI to operate were proved to be correct, further it was proved that design of the VI and the experimental scheme all were correct.

结果证明虚拟仪器的实验波形正确，进而证明了虚拟仪器设计和实验方案是正确的，基于虚拟仪器的调相与鉴相实验是可行的。

Total circuit scheme and time sequence of tool design and implementation have been designed on the AIL logging characteristic. The design and analysis for circuit unit have been carry out on the several units such as main control circuit, signal phantom circuit, signal control circuit, amplifier circuit, A/D circuit, transmitter drive circuit and power circuit.

按照AIL的结构特点，进行了仪器总体设计，设计了仪器工作电路原理和工作时序，在此基础上，进行了主控制电路、信号幻像转换电路、信号控制电路、放大电路、A/D转换电路、发射驱动电路、电源电路等单元电路的分析和设计，从而完成了仪器单元电路的设计与实现。

Dongguan Jian Qiao Equipment Co., Ltd was established for many years, located in Guangdong Province Tangxia Tangxia Town, Dongguan City Industrial Zone on the 30th the first company has been engaged in the electronic testing equipment, environmental test equipment sales services and the development of automatic test system, the main product has : testing machine, furniture testing machine, swing machine, optical quality control testing instruments, wire tester, wear-resistant machine, constant temperature and humidity machine, optical image measuring instrument, wire testing machine, office chair repeated impact test machine, a desk drawer repeated testing machine, office chair backrest repeated testing machine, office chairs rotary life testing machine, officelife test machine, plug line hoist swing test, MIT-style folding strength testing machine, tensile testing machine, micro-computers, paper tube compression testing machine, aging test machine, testing machine decolorization extent, resistant to rubbing tester, testing machine embrittlement, sudden pull test machine, testing machine, such as bonding strength.

东莞市剑乔仪器设备有限公司创建多年，位于广东省东莞市塘厦镇塘厦第一工业区30号公司一直从事电子测试仪器、环境试验设备的销售服务和自动测试系统的开发，主要产品有：试验机，家具试验机，摇摆试验机，光学品管检测仪器，线材测试仪，耐磨机，恒温恒湿机，光学影像测量仪，线材试验机，办公椅反复冲击试验机，办公桌抽屉反复试验机，办公椅反复靠背试验机，，办公椅旋转寿命试验机，办公椅脚寿命试验机，插头线吊重摆动试验，MIT式耐折强度试验机，微电脑拉力试验机，纸管抗压试验机，老化试验机，脱色程度试验机，耐揉试验机，脆化试验机，突拉试验机，胶合强度试验机等。

The successful mobile terminal test cases, which has completed With virtual instrument platform LabVIEW, shows that the research and development of TD-SCDMA terminal testing based on virtual instrument technology is the way forward.

本文首先介绍了一种基于虚拟仪器的终端综合测试解决方案；然后重点研究了在TD-SCDMA终端发射机与接收机的一致性测试中所需要测试的指标和测试方法、原理与算法；最后利用虚拟仪器软件NI LabVIEW 7.1编写了部分发射机测试指标的算法模块，并利用现有的仪器和硬件设备，搭建了一个仿真测试环境，同时配合编写了一个软件平台，实现对硬件的控制和对测试模块的调用。

Parallel interface achieve the data transmission between bit and I/O devices using more than one data wire, which is suit for short distance transmission. Come to a direct display of its functionalities with VC virtual platform by visual design.Data and code in every computer parts, describes itself by combination, the function is invisible.

然而，目前在计算机实验教学中，由于实验仪器复杂，精密和昂贵，往往不允许自行设计实验参数，反复调整仪器，这对剖析仪器性能和结构，理解实验的设计思想和方法是很不利的，在本次设计中主要应用了VC实验平台来进行仿真实验。

In the new models, there is no need to level and orientate theodolites for self--locating of GeoIMS. Comparing with the common model, the new models can eliminate the errors of levelling and orientating in self-locating of GeoIMS. So it is pos sible to improve greatly the precision of GeoIMS in the new models.

与传统模型相比，这几种新的自定位模型或者不要求仪器严格整平，或者不要求仪器进行相对定向，因此不再受仪器的整平、定向等误差的影响，从而使得系统的整体测量精度大幅度提高成为可能。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。