Automatic pump only has entrance side, and no "Vacuum" side.

自动泵没有“真空”侧，只有入口侧。

youdao

Special import automatic pump has been used in condensed water transportation.

采用进口专用凝结水自动泵输送凝结水。

youdao

Fully automatic PID monitoring and alarm, automatic pump to add the foam agent;

全自动PID监测与报警，蠕动泵自动添加消泡剂；

youdao

The Act banned the ownership of semi-automatic and pump-action rifles, weapons which fire explosive ammunition, short shotguns with magazines and elevated pump-action and self-loading rifles.

BBC: Mass shootings and gun control