For opening, the connection is bad, fuse links, lack of, should determine the cause and time to repair.

如有断路、接触不良、保险丝熔断、缺相，应查明原因并及时进行修复。

youdao

For opening, the connection is bad, fuse links, lack of, should determine the cause and time to repair.

如有断路、接触不良、保险丝熔断、缺相，应查明原因并及时进行修复。

youdao