Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/657262460e19bd7263ccb9faa1a7a87f.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 pull up bar例句_pull up bar英汉例句_pull up bar双解例句_沉淀汉英词典
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。