clapper GRE

1.We had to drive like the clappers to get there on time.

为了按时到达,们开得飞快。

2.The ZSJL Water Motor Alarm consists of a turbine shell, a vane wheel, a transmission shaft, a dabber, a rocker arm, a clapper, an alarm seat and a support shaft etc.

ZSJL型穿墙水力警铃是由轮机壳体、叶轮、传动轴、芯轴、转臂、铃锤、警铃座、支撑轴等组成。