1.
Study of SCM-controlled Emergency Disposal Device after Substation D.C. Disappeared;
变电站直流电源消失后的微机型应急处理装置的研究
2.
Failure Detection Experimental System of DC Stabilized Power Supply;
直流稳压电源失效机理及实验的研究
3.
Over-current Failure Mechanism of IGBT Within Voltage Source Converter Based High Voltage Direct Current
电压源换流器高压直流输电装置中IGBT的过电流失效机制
4.
AC current or voltage source. DC offset can be specified.
交流电流源或电压源。可指定直流偏移。
5.
Operation From DC Power Supply: Batteries.
使用直流电源：干电池。
6.
combined a.c. and d.c. welding power source
交直流两用弧焊电源
7.
transistorized regulated DC power supply
晶体管直流稳压电源
8.
Low voltage DC power is also provided for control power and emergency power.
低压直流电作控制电源和应急电源。
9.
Study on Active Fiber DC Transducer Used in HVDC;
高压直流输电有源光纤直流电流传感器的研究
10.
DC current or voltage source. Magnitude of AC component can be specified.
直流电流源或电压源。可指定交流分量的大小。
11.
circuit design, wiring diagrams, schematics, AC/DC sources
电路设计, 接线图, 示意图, 交流/直流电源
12.
Automatic exchange for DC and AC supply.
直流电源与交流供电能自动转换。
13.
Study of constant-current source for measuring DCR of large electric power equipment
电力设备直流电阻测量用恒流源研究
14.
The Research on Rectifier DC Electrical Source for Electrolyzing Cuprum and Monitor Technique;
电解铜整流直流电源及监控技术研究
15.
A Power Development of D.C Motor Taking Overload Protected Set;
具有过流保护的直流电机电源的开发
16.
A study on DC offset voltage and AC impedance of ECG electrodes
心电电极的直流失调电压和交流阻抗的研究
17.
To run a direct motor, we must connect it to a direct current source.
要开动直流电机，我们必须把它接到直流电源上。
18.
The Study on DC Active Power Filter for HVDC System
高压直流输电用直流有源电力滤波器的研究