Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/3728acfbd8566bfaefc663e1dcabdc3d.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 pull up bar是什么意思，pull up bar的翻译，pull up bar音标、读音、用法和例句_贰靶汉英词典
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. 主要分析了电解多功能天车打壳机构中打击头、 夹套、拉杆非正常失效的原因，并提出了解决的方案。