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To eliminate common-mode voltage of cascaded multi-level inverter, three kinds of phase-difference SVM based on left and right bridge vectors are proposed firstly. From these three modulations, equivalent SPWM components are deduced, and the unipolarity and bipolarity of output waveforms are analyzed. 2π/3 PD-SVM (phase-difference space vector modulation) is testified be unipolar.

为消除级联型多电平逆变器的输出共模电压，首先提出了基于左、右桥臂矢量的三类相差空间矢量调制(space vector modulation，SVM)技术，数学推导出三类调制技术的等效正弦脉宽调制(sine pulse width modulation，SPWM)的调制波，并分析了其各自相电压输出波形的单、双极性，证明2π/3相差SVM必为单极性调制。

He testified that there was a big difference between the funerals of those who are Christians and those who are unsaved.

他见证到基督徒的葬礼与那些没有得救的人的有很大的不同。

Endothelin is an important vasoconstrictor produced by endothelium that has been found recently, it also has been testified to contribute to thrombogenesis.

血栓形成是急性心肌梗塞的基本病因，溶栓治疗是目前治疗急性心肌梗塞的安全有效的措施之一。

This method has been testified in water level control system designed by the authors.

在水位控制系统中对该方法进行了实验验证。

TheAbstractfeasibility of this method is testified through the example of wave source problems on the three dimensions in full space.

并通过全空间三维波源问题的算例验证了这一方法的可行性。

Effectiveness of simulated IAG in counteracting vascular structural adaptational changes and the angiotensin Ⅱ receptor 1 expression changes induced by simulated weightlessness This part of the work testified previous morphological results about the vessels obtained in our laboratory using electron microscopy.

每日-G〓暴露1h即可防止模拟失重大鼠动脉血管出现适应性结构重塑本实验电镜观察再次验证了本实验室早先关于模拟失重大鼠脑及后肢动脉血管相反方向结构重塑变化的报道。

Eg.2 The frescoes of Qusayr Amra show details of the clothes, i.e. the colors and the fabri cs, that testified the social and economic life in the Umayyad period. para. 3

译： Qusayr Amra 壁画显示出了衣裳的细节，即颜色和织纹，反映出了伍麦叶王朝时期的经济、社会生活。

Pushed by Hamilton's theory, some botanists have discovered and testified aposematic coloration do exist in plants such as autumn leaves, young leaves of tropical rainforests, some thorny plants and reproductive organs of plants whereas some of them are still obscure or controversial.

起源于猎物－捕食者关系的警戒色理论在动物界得到了充分研究，但植物警戒色却不为人所知，直到2001年Hamilton关于秋季树叶颜色的信号假说公开发表后，才引起人们对植物警戒色的初步研究。

Through the research of direct search method based on 3D FEM, and its application for the tunnel slope stability analysis, the objectives of this work in this paper are as follows:1. The dynamic programming as well as its application for 3D side slope stability analysis is studied. With the introduction of graph theory concept, one kind of glide pattern of 3D slope is constructed, and the critical slip surface with smallest safety factor is searched with the aid of one auxiliary function including safety factor;2. Using the C++ programming language, the 3D slope stability analysis and the direct search procedure is established, and this method is testified applicably by some contrast analysis, also some influence factor in analysis is discussed;3. Integrated with the different actual situation in tunnel slope, considered its excavation, timbering and rain infiltration, its stability influence and rule is researched used this method, also some processing measure is proposed.

本文通过对三维有限元直接搜索法的研究，并将其应用于隧道边坡的稳定性分析中，主要的研究内容有：1、研究了动态规划原理及其在三维边坡稳定性分析中的应用，引入图论概念，构筑出一种边坡三维滑裂面的滑动模式，借助一个包含安全系数的辅助函数并通过动态搜索求得临界滑裂面与最小安全系数；2、采用C++程序设计语言，编制出边坡三维稳定性分析以及直接搜索法的程序，通过一些算例的对比分析，验证本文方法的适用性，并讨论了三维分析中的一些影响因素。3、结合隧道边坡的不同实际情况，考虑施工开挖过程、衬砌结构及降雨渗流等方面的因素，利用本文方法研究对其稳定性的影响和规律，并提出处理措施

In order to find out the noble metal resources urgent needed,coordinated with gold prospecting,the method of induced polarization was successfully used to find the auriferous fault alteration zone,and delineated its position in detail,which was testified by the drills later.

为寻找中国急需的贵金属资源，配合地质找金工作，在第四系覆盖层上，用激电方法成功地找到含金断裂破碎蚀变带，并圈定其具体位置，后经钻探验证而打到了含金矿体。

After explaining total design of automated test system for microcircuit , the thesis introduces GPIB standard .

文章在说明了微电路模块自动测试系统的总体设计后，对GPIB标准进行了介绍。

He interceded in my behalf.

他替我说情。