The paper discusses the principle of the three-phase Voltage Source PWM Rectifier ( VSR ) .

Voltages to ground are limited to the phase voltage.

可限制对地电压到相电压.

The working principle of the single-phase voltage source 4-quadrant converter is introduced.

介绍了单相电压型三电平四象限变流器工作原理.

In order to measure the VFT phase voltage-phase enclosed GIS, 3 capacitance sensors are needed.

为了测量GIS中三相快速瞬态电压, 需要三个电容传感器,而每个传感器同时受三相电压的电场耦合.

A new algorithm of space vector PWM for three-phase voltage fed inverter is described.

提出一种新的用于三相电压型逆变器的空间矢量PWM算法 .

Allowing insurance companies to phase out the geographical restrictions on the establishment of domestic branches.

允许保险公司随着地域限制的逐步取消设立国内分支机构.

Having progressed smoothly, the project is currently in its phase-out period.

目前项目进展顺利, 并已进入收尾阶段.

Third, the pace to phase out inferior enterprises from the market will be quickened.

第三, 加快劣势企业退出市场步伐.

Anti-corrosion agent for the carbon steel cooling system in absorption refrigerators. And phase out with exemption.

碳钢中的防腐剂,和电冰箱制冷剂中的防腐剂. 并逐步停止使用.

Allows the Necron Lord and nearby friendly units to temporarily phase out of material reality.

让Necron公爵和附近的友好单位暂时物质真实逐步淘汰.

They began to phase out any remaining ties between gold and currency values.

他们开始逐渐摈弃遗留在黄金和货币价值之间的一切联系.

A powdered natural red food pigment was extracted and refined from phaseolus angularis Wight.

从赤豆中提制出一种粉状天然食用红色素,命名为“赤豆红色素”.

Purpose: Through test different batch number phaseolus cold tablets solubility velocity, get the quality.

目的: 通过对不同批号的四季感冒片溶出速率的测定, 考察其质量.

Objective: To investigate the clinic characteristics in elder pulmonary heart disease ( PHD ) accompaniedheart disease ( CHD ) .

摘要目的: 探讨老年 肺心病 并 冠心病 的临床特点.

Why do you want to go to the US for PhD?

他不喜欢听大话,要说的具体,可信.要说明你为什么去.

Many people earn a PHD, yet not many are philosophers.

一些人获得了“PHD”, 但并不是这些人都是哲学家.

She's presently working on her PhD.

她目前在攻读哲学博士学位.

WZ: Well, we are applying for PhD in your Economics Department.

我们在申请贵系的博士学位项目, 我可以问几个问题吗?

She's working towards her PhD.

她在攻读博士学位.

He was awarded his PhD for a thesis on industrial robots.

他凭一篇研究工业机器人的论文获得博士学位。

Phenoxyacetic acid molecular imprinted polymer ( POAA-MIP ) based on Phe-peroxyacetic acid ( POAA ) as template molecule was synthesized.

该文以 苯氧基 乙酸为模板分子,制备了苯氧基乙酸印迹聚合物.