The R&D of electric vehicles provides a new field to the research of electric drive system.
电动车的研发为电驱动系统的研究提供了一个新领域。
That is the electric charge in D.
这是D中的电荷。
Railway applications - Electric equipment for rolling stock - Part 3: Electrotechnical components; Rules for d. c. circuit - breakers.
铁路设施。机车车辆用电气设备。第3部分:电工元件。直流断路器规则。
应用推荐