speed-muller

例句：

1. 1. The speed-muller is used to measure the speed of cars.
   测速器用于测量汽车的速度。
2. 2.The engineer used a speed-muller to check the accuracy of the new tire inflation system.
   工程师使用测速器检查新轮胎充气系统的准确度。
3. 3.The speed-muller was used to measure the distance traveled by the car during the test.
   测速器被用来测量汽车在测试中行驶的距离。