model speed

例句：

1. 1.The new car models have been tested at high speeds.
   新车型在高速下进行了测试。
2. 2. The model speed of the engine is very fast.
   发动机的模型速度非常快。
3. 3.The model speed of the car is 100 km/h.
   这辆车的模型速度是每小时100公里。