Feng Yun - ching answered hastily , springing up and all but overturning the opiumlamp as he did so.馮云卿陡的跳起來說,幾乎帶翻了煙盤里的煙燈.Overturning and sliding are seldom a factor in the design of arch dam.拱壩設計中很少考慮傾覆和滑動的問題.Overturnin...
Overturning and sliding are seldom a factor in the design of arch dam.拱壩設計中很少考慮傾覆和滑動的問題.Feng Yun - ching answered hastily , springing up and all but overturning the opiumlamp as he did so.馮云卿陡的跳起來說,幾乎帶翻了煙盤里的煙燈.Demonstrat...