播种量调节小齿轮
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.
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)。
A Study on Rack and Pinion Steering Gear with Variable Ratio
变速比齿轮齿条式转向器的共轭分析
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