Cars get built out of engines, tires and steeringwheels.
汽车由发动机,轮胎,和方向盘等零件制造而来。
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As cars grew progressively lower and cockpits narrower throughout the 1960s and 1970s, steeringwheels became smaller, so as to fit into the more compact space available.
Front wheel shimmy is the phenomenon that steeringwheels vibrate around king-pin axis with a certain amplitude and frequency when the vehicle travels in a straight road.