1.
Automatic exchange for DC and AC supply.
直流电源与交流供电能自动转换。
2.
Design of aviation AC power supply system signal resource based on SCM
航空交流供电测试系统信号源的设计
3.
After the advent of transformers, much of the load was served by alternating current instead of direct current.
变压器出现后,许多负荷由交流供电而不用直流供电。
4.
supply meter for direct or alternating current
直流或交流电供应电度表
5.
Research on the Urban Rail Transit Traction Power Supply Rectifier
城市轨道交通直流供电整流机组研究
6.
Choie of "Power Supply System"of Hight-Power A.C Adjustable Speed Motor
大容量交流变速电机驱动“供电制”选择
7.
THE DEVELOPMENT OF LN-GDXT-IV AC-DC ISOLATED POWER SUPPLY
LN-GDXT-IV型交直流隔离供电电源的研制
8.
Model J0408 AC Voltmeter is suitable for students to measure the voltage in a AC ciruit in laboratory.
J0408型交流电压表供学校学生在实验中测量交流电路中的电压用。
9.
All partners, also for Three-phase alternator, engines and Alternators and/or Gasoline reach you by telephone.
另外，公司也提供三相交流发电机、电机以及交流发电机。
10.
Two-way power supply lets you use either batteries or AC adaptor (sold separately).
双程供电您使用电池或交流电配接器(另售).
11.
Resistance thermometer bridges may be excited from either a-c or d-c sources.
电阻温度计电桥的供电可以是交流电源，也可以是直流电源。
12.
Study on AC Excited Wind-Energy Generation System Fed by Matrix Converter;
矩阵变换器供电的交流励磁风力发电系统研究
13.
Study on Dc Traction Power Supply of High Quality for Urban Mass Transit;
高性能城市轨道交通直流牵引供电电源的研究
14.
Research on Electromagnetic Compatibility of Atternating-direct Current Hybrid Power Supply System
交直流混合供电系统的电磁兼容性研究
15.
Design of Uninterrupted Power Supply System Based on Digital Generator
基于数码交流发电机的不间断供电系统设计
16.
The DC system is normally supplied from a battery charger system, which is supplied from the low voltage AC system.
直流系统通常由蓄电池充电系统供电,蓄电池充电系统由低压交流系统供电。
17.
current meter (electrical supply)
电流（电力供应）表
18.
All range voltage,Ampere meter,can suit the demand of customer.
任意量程的交直流电压、电流表均可按用户要求供货。