The flywheel also has a large ring gear at its outer edge, which engages with a pinion gear on the starter motor during enginecranking.
在飞轮的外缘(压)有一齿环，在发动起动时，齿与起动机的驱动小齿轮啮合。
2
In the early days of cars, you actually had to crank the engine with a little handle. Now the crankingmotor or starter is just powerful enough to start the engine turning.
以前的汽车需使摇柄才能使发动机启动，现在启动机或点火机已足以使发动机启动了。
3
The flywheel also has a large ring gear at its outer edge, which engages with a pinion gear on the starter motor during enginecranking.