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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。

Beverley was ecstatic when she discovered a box containing a hand crafted, one of a kind gold bracelet that she'd been admiring for quite some time.

两项比赛的快感，当她发现一个盒子，里面装着一个订单精工，一类中的一个金手镯，她早晨一直向往多时。

Compound fiber is in carborundum of new-style carbon ／ success of development of university of national defence science and technology reports according to daily of science and technology, a few days ago carborundum of ／ of a kind of new-style carbon fiber material develops a success in university of national defence science and technology, pass expert appraisal.

新型碳／碳化硅复合纤维在国防科技大学研制成功据科技日报报道，日前一种新型碳／碳化硅纤维材料在国防科技大学研制成功，并通过专家鉴定。

However, not long ago, our column receives report of incoming telegram of a consumer however, on their place market, with the plant raw material such as soja at all production does not come out have sauce of sauce of a kind of brew, is this how to return a responsibility after all?

然而，不久前，我们栏目却接到一位消费者来电反映，在他们当地市场上，有一种酿造酱油酱油根本就不是用大豆等植物原料生产出来的，这究竟是怎么回事呢？

Early CPUs were custom-designed as a part of a larger, sometimes one-of-a-kind, computer.

早期的CPU是定制设计的一部分较大，有时一的一类，计算机。

It is also a kind of good method to demarcate A and B flat of the No.7 letter network.

遗传算法的应用范围十分广泛，用它来解决No.7信令网的A、B平面划分问题也是一种好的方法。

Software component is a thought as well as a general designation of a kind of standards and technologies.

在国际互联网促成全球化竞争的情况下，电子商务系统的发展趋势是提供多元化、及时、互动的服务。

B A:Dubbing is a kind of language arts.

B A配音是一门语言艺术。

Two inverse eigenvalue problems of a special kind of matrices A are discussed in this paper.

讨论一类具有特殊形式的矩阵A的两类逆特征值问题。

The main points andcontent of the paper are indicated as following:(1) Producing cobalt matte by carbothermal reduction and pyritesulfuration of nickel converter slag at high temperature A mineralogical study of coverter slag shows that the most of cobaltand nickel exist in fayalite of a kind of silicate minerals as a form ofoxide and the rest of cobalt and nickel and most of copper in slag assulphide.

论文的主要研究内容和结果如下：(1)转炉渣高温还原硫化制备钴冰铜转炉渣的矿物学研究表明，在转炉渣中大部分钴、镍以氧化物形态"溶"于铁橄榄石等硅酸盐类矿物中，其余钴、镍及大部分铜以硫化矿形态赋存于转炉渣中。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。