你这个传递过程中速度改变扭矩比变化和不同传动比挡位改变是两回事。

你要是不明白，看看自行车就知道了，自行车通过大牙盘和小飞轮实现传动。而能够通过后塔轮不同齿数飞轮改变传动的，叫变速自行车，而像共享单车，你也非要叫单档变速自行车吗？


【 在 freshcool 的大作中提到: 】
: 以下摘自wikipedia
: Most currently-produced passenger cars with petrol or diesel engines use transmissions with 5–8 forward gear ratios and one reverse gear ratio. Electric vehicles typically use a single-speed or two-speed transmission.
: The simplest transmissions used a fixed ratio to provide either a gear reduction or increase in speed, sometimes in conjunction with a change in the orientation of the output shaft. Examples of such transmissions are used in helicopters and wind turbines.
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FROM 101.39.103.*