Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/62e03eebc5a73440b5f8bab2ffb64d9c.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 screw jack英英字典_screw jack剑桥英语解释_screw jack柯林斯英文解释_甲百匯小鸡词典
1. N a lifting device utilizing the mechanical advantage of a screw thread, the effort being applied through a bevel drive 千斤頂 (Also called jackscrew, jack)