Those are possible problems, but tell me, when you turn the key, do you hear the starter motor crank?
这些都可能存在问题。但是你先告诉我，当你转动钥匙时，你听到发动机转动了吗？
2
An automotive starter motor has many conductors and USES a lot of current to create enough rotational force to crank the engine.
当大电流流过汽车启动机的线圈时，可以产生足以让发动机曲轴转动的力矩。
3
In the early days of cars, you actually had to crank the engine with a little handle. Now the cranking motor or starter is just powerful enough to start the engine turning.