Warning: file_put_contents(): Only 0 of 4869 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/5256789.com/index.php on line 55 lift pump英英字典_lift pump剑桥英语解释_lift pump柯林斯英文解释_绿查网谷歌词典
1. N a pump that raises a fluid to a higher level. It usually consists of a piston and vertical cylinder with flap or ball valves in both piston and cylinder base 升液泵→compare force pump