Khloekloklo
电力工程师[词典] [化] power engineer;[例句]我还认识一个退休的电力工程师，退休之后他成为了一名身价颇高的陶器艺术家。I know a retired electrical engineer who has become a highly-paid ceramic artist.
琳子Yulander
1 表2优势保持高功率因数工业2 表2优势在使用一三相系统不是一个单一的相位系统在大功率应用3 将原因为何大多数设备包含一个地球4 个变压器的可靠性平行连接在区变电站是99%和99.9%什么是整体可靠性的变压器5 个建议是提高可靠性的配电系统在城市地区6 简要说明功能续流二极管的半导体开关7 什么是必不可少的特点，一个在线不间断电源8 什么是电影解释其功能 power engineering=电力工程
梦叶草2011
问题1答案： ①can increasethecapacityofpower generation and supplyof equipment,theequipmentcanbe fully utilized. ②can reducethevoltage lossofthepowersystemtoreducevoltage fluctuations, improve voltage quality. ③to reducethecurrentinthetransmission, substation,power distributionequipment,thereby reducing thepower lossofthepower transmissionprocess. ④to reducecorporateelectricity costs,reduce production costs. 问题2答案： Compared to single phase, three phase power transmission costs low transmission power. Moreover, the simple structure of three-phase motor, high reliability, extensive use in industry, three-phase power phase motor can be driven directly, saving a lot of converter circuit. 问题3答案： Was originally intended to prevent the protective measures taken by the electric or electronic devices such asbeing struck by lightning,thunder and lightning of thelightning current through the lightning rodis introduced intothe earth,and thus play the role of protecting the building.Meanwhile, thegroundis alsoan effective meanstoprotectthepersonal safety,whenfor some reasoncaused by thephase line(such aswire insulation is poor,the aging) and equipmenthousingtouch,equipmentenclosurewillbedangerousvoltage, whichfault currentwillbegeneratedthroughthePE wiretotheearth,and thusplay a protective role.
