steel wall casing的意思|示意
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钢壁套管
steel wall casing的网络常见释义
钢沉井 ... cast steel spiral casing 铸钢蜗壳 steel wall casing 钢沉井 shaft steel casing 钢井壁 ...
steel wall casing相关例句
An iron ore shaft in Hebei was constructed by drilling. After removal of steel casing in the shaft, water leaked around the shaft wall.
河北省某铁矿竖井采用钻井法施工，拆除井筒钢护壁后出现井筒漏水。