| 1. | 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。 |
| 2. | Design of a phased - shifted soft switch dc power
一种移相式软开关直流电源的设计 |
| 3. | Programmable dc power supply triple output
可程式直流电源供应器三输出机种 |
| 4. | Specifications of d . c supply cabinet in power system
电力系统直流电源柜订货.技术条件 |
| 5. | Programmable dc power supply single output
可程式直流电源供应器单输出机种 |
| 6. | Dc electrical source supervisor for electric power
电力用直流电源监控装置 |
| 7. | General specification for low voltage direct current power supply
低压直流电源通用规范 |
| 8. | 662x multiple - output dc power supplies integrate
多重输出直流电源供应器 |
| 9. | Low - voltage dc power circuit breakers used in enclosures
在外壳内用的低压直流电源断路器 |
| 10. | Automatic exchange for dc and ac supply
直流电源与交流供电能自动转换。 |
