According to an initial investigation, a sudden loss of power caused the signal system to fail, forcing the trains to be operated manually, Shanghai Shentong Metro Group Company said in a statement.

上海申通地铁集团公司在一次声明中称，根据初步排查，电力突然中断致使地铁运营信号系统失灵，导致不得不对列车实行人工调度。

youdao

According to an initial investigation, a sudden loss of power caused the signal system to fail, forcing the trains to be operated manually, Shanghai Shentong Metro Group Company said in a statement.

上海申通地铁集团公司在一次声明中称，根据初步排查，电力突然中断致使地铁运营信号系统失灵，导致不得不对列车实行人工调度。

youdao