基本解释[土木建筑工程]钻孔沉箱词组短语短语prestressed concrete drilled caisson 预应力管柱drilled caisson pile 钻孔灌注桩underwater drilled caisson grouting 水下钻孔桩灌注drilled -in caisson 钻地沉箱专业释义土木建筑工程钻孔沉箱