Warning: file_put_contents(): Only 0 of 6326 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/oclz.com/index.php on line 55 screw jack英英字典_screw jack剑桥英语解释_screw jack柯林斯英文解释_菜篮子兴趣思朗文词典
1. N a lifting device utilizing the mechanical advantage of a screw thread, the effort being applied through a bevel drive 千斤顶 (Also called jackscrew, jack)