pulley speed

例句：

1. 1. The car's engine is running at a high Pulley speed.
   汽车的引擎以很高的滑轮速度运行。
2. 2. The machine has to be adjusted for the correct Pulley speed.
   这台机器需要调整到正确的滑轮速度。
3. 3. The train was moving at a Pulley speed of 60 km/h.
   火车以每小时60公里的滑轮速度行驶。