短語(yǔ)詞組

短語(yǔ)

• shaft t boring 鉆井
• Shaft boring machines 礦用鉆井機(jī)
• shaft sinking by boring 鉆井法鑿井
• shaft boring detail 豎井鉆進(jìn)
• shaft boring machine 豎井掘進(jìn)機(jī)
• shaft boring through clay layer 粘土層鉆井
• full face shaft boring machine 豎井鉆機(jī)
返回 shaft boring