FA478 increases the itinerancy pneumastic suction motion ,it makes the roving yarn evenness to improve.

FA478还增加了巡回式吹风装置，使粗纱条干均匀度明显提高。

When  heavy  dirt  and  sludge  accumulate  on  the suction strainer, the pump soon begins to cavitate.

但由于粗滤器是装在油箱内部，所以粗滤器的维护常常被忽视。

Some pumps works by suction.

有些是用力工作的。

A uniform magnetic field acts perpendicular to the porous surface which absorbs the micropolar fluids with a suction velocity varying with time.

均匀磁场垂直作用于可以收微极流体的多孔表面，引速度随着时间而变化。