Light emitting polymers emit colours when connected to an electric power source.

发光聚合物与电源相连时能发出彩光。

youdao

Aircraft electric power source system (AEPSS) is an important part of aircraft equipment. AEPSS includes AC-AEPSS and DC-AEPSS.

飞机电源系统是飞机机载设备的重要组成部分之一，包括交流电源系统和直流电源系统。

youdao

The aircraft electric power source system is an important part of the on board equipments, which will affect the normal and secure flight of the airplane.

航空电源系统是机上设备的重要组成部分，任意一个环节出现故障，将会影响整个飞机系统的正常安全运行。

youdao

In this case, however, the front electric motor-which is now supplied with energy by the TDI engine-operates exclusively as a generator and a power source for the electric motor at the rear.

ENGADGET: VW unveils CrossBlue plug-in SUV with iPad mini headrests and 85MPGe efficiency (eyes-on)

Driving those market valuations is the expectation of more growth ahead: Analysts both in industry and in the government anticipate that solar will be the fastest-growing alternative source of electric power over the next 25 years.

FORBES: Magazine Article

Crews have been working for a long time on the electric lines above the tracks, the power source for the trains.

WSJ: Probe begins after Conn. commuter trains crash