On the base of practical transformer substation main connection, electric components and system circuit model are first formed in the paper;
本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；
2
The team from Ohio State University believe the connection could explain why levels of depression have increased as the use of electric lights have increased.
来自俄亥俄州立大学的研究团队认为，其中的关系可以说明为什么随着电灯用量的增加抑郁的程度也会增加。
3
Connect the ground connection of the electric arc welding equipment as near as possible to the welding point on the part to be welded.