短語詞組短語shaft t boring 鑽井Shaft boring machines 鑛用鑽井機shaft sinking by boring 鑽井法鑿井shaft boring detail 竪井鑽進shaft boring machine 竪井掘進機shaft boring through clay layer 粘土層鑽井full face shaft boring machine 竪井鑽機 返回 shaft boring