在钻机里常采用弧齿圆锥齿轮提高角传动齿轮承载能力。
Spiral bevel gears are usually used to improve the bearing capacity of the Angle transmission gears on drill RIGS.
有些车的转向系角传动比是可变的，这种转向器采用齿轮齿条式，它在中间而不是外部，有不同的齿密度（每寸齿数）。
Some cars have variable-ratio steering, which uses a rack-and-pinion gear set that has a different tooth pitch (number of teeth per inch) in the center than it has on the outside.
传动系角传动比低，则转向灵敏- - - - - -当你想将车轮转过一定角度时，不必把转向盘转很大的角度- - - - - -正是赛车所需要的。
The lower ratio gives the steering a quicker response — you don't have to turn the steering wheel as much to get the wheels to turn a given distance — which is a desirable trait in sports cars.
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