This paper presents two kinds of small convertor for 48v direct current fluorescent lamp used in passenger train.

本文介绍两种旅客列车用48伏直流日光灯小型变换器。

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This paper presents two kinds of small converter for 48v direct current fluorescent lamp used in passenger train.

本文介绍两种旅客列车用48伏直流日光灯小型变换器。

youdao

The low voltage power supply of Na (Hg) lamp used in experiment usually uses inductance to operate as current limiter.

实验用低压钠（汞）灯电源一般用电感元件作为限流器。

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Makeshift checkpoints sprang up, with litter bins, bricks, gates and uprooted lamp-posts used to block cars.

ECONOMIST: Upheaval in Syria

For renewable energy on a smaller scale, a graduate student in Israel developed a prototype for an elegant rocking chair called Otarky that produces energy from its rocking motion and can be used to charge devices and power a lamp.

ENGADGET: Inhabitat's Week in Green: GPS shoes, shape-shifting bicycle and a wheelchair helicopter