常見例句雙語例句The vacuum pump is not put on fixed installation, when the air in the suction pipe is removed, a siphon effect will be induced, and the vacuum pump can then be taken away.真空泵不作固定安裝， 抽出吸泥琯的空氣， 吸泥琯形成虹吸後， 把真空泵搬走。 返回 fixed suction installation