Thus, the steering knuckle, spindle, wheels, and tires turn to one side, causing the car to turn.

这样，转向节、转向节轴端、车轮和轮胎都会向一侧旋转，汽车实现转向。

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We have made certain that the reason of the splined spindle rapture is fatigue failure, its crack initiation lies in the minimal knuckle curvature radius surface region of the spline dedendum bottom.

初步确定了花键轴的断裂是疲劳断裂，裂纹源在花键齿根底部过渡圆角曲率半径最小的表面部位。

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