clock type speedometer

例句：

1. 1. The clock type speedometer on the car is very accurate.
   车上的时钟类型速度表非常准确。
2. 2. The engineer used a clock type speedometer to measure the speed of the train.
   工程师使用时钟类型速度表来测量火车的速度。
3. 3. The clock type speedometer was used to monitor the traffic flow in the city.
   时钟类型速度表被用来监控城市中的交通流量。