The excavation of inclined shaft was always difficult in the construction of Pumped-Storage Power Station.

在抽水蓄能电站中斜井开挖施工历来是一个难点。

youdao

The excavation of inclined shaft was always difficult in the construction of Pumped-Storage Power Station.

在抽水蓄能电站中斜井开挖施工历来是一个难点。

youdao