undercarriage的例句（undercarriage在句子中的用法）

• A kind of cutter undercarriage mechanism used in cutting machine is introduced. 介绍一种在卷筒放卷和收卷的切割分切机器中的进刀与退刀机构.
• The undercarriage on light aircraft does not always retract in flight. 轻型飞机飞行时起落架不一定缩回.
• There was a whine of hydraulics as the undercarriage locked into position. 随着液压系统嘎吱一声响，起落架进入了锁定位置。