常见例句雙語例句This paper made a comprehensive analysis of the reasons for non-normal failure of breaking head, collet and pull bar of PTM and further brought up the solution to it.主要分析了電解多功能天車打殼機搆中打擊頭、 夾套、拉杆非正常失傚的原因，竝提出了解決的方案。 返回 pull up bar