免费又黄又硬又爽大片_差差很疼大全软件_性欧美viubeos另类12_赵茹珍未删减大尺度

中文
27.5 kV disconnect switch

The 27.5kV disconnect switch is a high-voltage electrical equipment used to realize the electrical power supply and isolation function of traction power supply equipment and lines. It is used to break or turn on the high-voltage electrical circuit without load, and to change the operation mode in conjunction with circuit breakers, and to implement electrical safety isolation of busbars and equipment to be serviced.

Procurement Consultancy

Email:schydq@163.com

image_1631778190_daaYP5t5.jpg