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）。

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A rack-and-pinion gear set is enclosed in a metal tube, with each end of the rack protruding from the tube.

整个齿轮齿条式转向器装载金属壳内，其齿条从转向器伸出来与转向摇臂连接。

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Resonable Designs: advanced rack and pinion drive in Y axis with larger speed and strength.

设计合理：采用先进的Y轴双齿条传动、速度快、力量大。

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They knew things about cars that I never wanted to know about, such as torque ratio and the differences between rack and pinion steering vs. worm and roller.

FORBES: So, Why Would Ford Loan Someone Like Me a Car?

Other advances included rubber cone independent suspension, designed by Alex Moulton (who incidentally, went on to design the Moulton bicycle -- another of my favorite designs), rack and pinion steering and a monocoque body that eliminated the need for a costly separate chassis.

CNN: A design classic

You name it, they have run a railway up it, by hook or by crook, by rack or by pinion and by Albula and St Moritz.

BBC: Full steam ahead