Keep suction lines free of obstructions. Ensure there are no air leaks; air leaks; air being drawn in on the suction side is the major cause of pump malfunction.

防止吸管堵塞，确保没有空气泄漏，在吸取端的空气泄漏能引起泵的故障。

youdao

An oxygen -supply pipe and suction tube are settled on the bottom and side of tongue-spatula to provide oxygen and absorb phlegm simultaneously on exposure of glottis.

在镜片的下侧和背侧，分别装有供氧管和吸痰管，可在暴露声门的同时供氧和吸痰。

youdao

This paper presents an investigation on the side wall effect in two -dimensional transonic wind tunnel with sidewall boundary layer suction around the model.

本文对模型周围的侧壁附面层抽吸，研究跨音速二元风洞的侧壁干扰。

youdao