communication information

It is constructed with a direct AC/AC converter and PWM feedback control circuit.

设计了一种新颖的交流开关稳压电源,采用直接的“交流/交流”变换和PWM反馈控制电路。

A novel AC voltage-stabilized power supply is discussed in this paper,which is constructed with a direct AC/AC converter and PWM circuit typology.

提出一种新型的交流稳压电源,采用直接的“交流/交流”的变换电路和PWM控制。

Process Practice of Tap-to-Tap Time Controlling for an 100 t AC Shaft Arc Furnace at Anyang Steel;

安钢100 t交流竖式电弧炉控制冶炼周期的工艺实践

Varible polarity process of inverter AC arc welding power source;

逆变交流弧焊电源输出变极性过程

DC energy conservation control transform of hoist AC contactor;

提升机交流接触器直流节能控制改造

Arrangement of Space and Causation of Exchange;

空间的赋形与交流的促成

The Exchange of Registered Planners of AICP and Chinese Counterpart;

中美注册规划师协会的交流——从日照市万平口地区概念性规划设计谈起

Something on inspection of shiprepair and exchange with ship owner;

谈谈修船检验与船东的交流

The Documentary study and Cultural Analysis of Fujian-Taiwan Cultural Interchange (FTCI);

闽台文化交流的文献研究及文化解析

The author raises that the teachers should compile teaching material, and establish the interchange system of teaching material of the deferent styles.

本文建议经济数学教学大纲要分层次 ,并鼓励教师自编教材 ,允许不同风格的教材进行交流与创