您要查找的是不是：
- 直流UPS DC UPS
- 便携式仪器仪表用直流UPS的设计 Design of the DC UPS for Portable Instruments
- 直流 direct current
- 直流电源 direct current supply
- 直流电压 volts d.c.
- 直流电机 DC electric machine
- UPS Uninterrupted Power System(UPS)
- 直流稳压电源 D.C. regulated power supply
- UPS间 UPSroom
- UPS并联 UPS parallel-combined
- 直流屏 direct current cabinet
- UPS系统 UPS system
- UPS变换 backward mapping
- 直流电阻 DC resistance
- UPS选择 choice of UPS
- 直流发电机 direct current dynamo
- UPS因素 factor
- 直流电动机 DC motor
- UPS电源 UPS
- 交直流 AC/DC
