The Dongguan spring core electron Limited company manages silicon-controlled rectifier, fieldtube, two triodes, rectification bridge best-selling consumer market.
东莞泉芯电子有限公司经营的可控硅、场管、二三极管、整流桥畅销消费者市场。
2
Viewed from inside the tube, this field looks like an accelerating electrical pulse, and it is this pulse that picks up and carries the electrons-or, if the polarity is reversed, the protons.
从腔内看，此电场就如同一个加速电流脉冲，该脉冲可选中并携带电子，或在极性逆转时选中并携带质子。
3
A field survey was carried out to determine whether households obtained drinking water from deep tube Wells installed in 2005.