Rack-and-pinionsteering is used on many new smaller cars and on most cars with a transverse engine.
很多新型小汽车和多数发动机横置的汽车都采用齿轮齿条式转向器。
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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.