查询词典 electric current

During the high-voltage device design, the thick epitaxial layer LDMOS which is compatible with current technology was researched. This device used piecewise VLD and multiple region structure F reduce field layer. The using of the F reduce field layer effectively reduce the surface electric field of the device, shorten the length of its drift region, enlarge the choice of range of the ion implant dose of the P layer, and effectively restrain the disadvantageously affection on the breakdown voltage of the interface charge Qss.

在高压器件研究中对与现有工艺相兼容厚外延LDMOS进行研究，该结构采用分段变掺杂多区P~-降场层，有效降低器件的表面电场，缩短器件的漂移区长度，增大P~-降场层注入剂量的选择范围，并有效地抑制界面电荷Qss对器件耐压的不利影响。

Calculate distribution coefficient and every line segment RMS current according to user's electric energy used.

0引言线损是供电企业的重要经济指标，线损的高低直接代表了供电企业的管理水平。

ABSTRACT: A Rockwell PowerFlex7000 Variable Frequency Drive is used in JiuZHou Electric medium voltage drive test bay as the converter. Because of it belong to the current source drive, it has the function of the four quadrant, it can achieve the energy feedbackmake the motor brake,also has the advanced vector control technology, so it can achieve all kinds of load test, there are no other drives can replace it in simulate motor load. PowerFlex7000 drive has ability to achieve the full load test before the drive leave factory.

摘 要：罗克韦尔PowerFlex7000变频器在九洲中压变频实验站测试系统中作为变流逆变器使用，由于本身属于电流源型变频器，具有四象限运行功能，能够实现能量的回馈和对电机的制动，先进的矢量控制技术，可以实现各种复杂多变的负载特性，在模拟电机负载方面起到了其他变频器无可替代的作用，实现了变频器出厂之前的满负荷测试。

The magnetic field of motor and the eddy current loss in PM are both solved based on FEM for three-dimensional electric magnetic field.

通常在永磁同步电机中都认为转子损耗是可以忽略不计的，主要是因为转子是同步于定子磁动势旋转的。

The low voltage and low current mean the low power of electric arc.

喷涂电流对孔隙率的影响与喷涂电压类似。

The effects of welding speed, welding current and effective radius electric arc on temperature field are discussed.

对焊接过程产生的应力进行了实时动态模拟，利用本文模拟分析方法，可以对焊接过程的热应力及残余应力进行预测。

Current is the flow of electric charge.

电流电流是电荷的流动，以安培为单位。

In this method, an electric heating current is passed through the material.

在该方法中，加热电流通过原料。

This paper analyses current situation of electric power production management and decision support system, introduce...

本文分析了电力企业生产管理和决策支持系统现状，介绍了模型和模型库，对电力企业的重要性和决策支持系统理论进行了系统阐述，在此基础上，研究了电力生产决策支持系统，提出了电力生产决策支持系统的整体框架。

The relation between the current oscillation parameters of this material and light intensity and electric field is studied.

用高温扩散方法制备出补偿Si∶材料，并研究了这种材料的电流振荡参数与光照和电场之间的关系。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。