基本解釋中間平巷同根派生 subdrift相關(guān)詞英漢例句Practice of Using Shallow Shrinkage Method Following Sill Pillar-Free Subdrift Caving in the Bottoming 尖滅礦體用淺孔留礦法銜接無(wú)底柱分段崩落法的實(shí)踐manway subdrift 人行分段平巷subdrift更多例句