自吸式水泵第一次使用时，需要加引水，以后则不必再加引水。

Self suction pump is used for the first time, need to add water, then don't need to add water.

youdao

这是一款轻便、自吸式、中等扬程的水泵、配有特大的毛发收集器；

This is portable pump with strong suction and medium head doss, equiped with extraordinary hair collector;

youdao

这是一款轻便、自吸式、中等扬程的水泵、配有特大的毛发收集器；

This is portable pump with strong suction and medium head doss, equiped with extraordinary hair collector;

youdao