pawl造句

1、Pawl is a simple device which allows a shaft to turn only one way.
掣爪是一种非常简单的只让转轴往一个方向转动的装置。

2、A ratchet pawl locks or releases the ratchet slider.
棘齿爪锁定或者释放所述棘齿滑块。

3、The pawl type bamboo roots grab was designed.
竹爪式竹根挖掘机方案设计。