The input shaft and output shaft of this kind of double universal couplings are non-parallel, non-intersecting.

这种联轴节的输入轴与输出轴成空间交错轴关系。

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Gears on nonparallel, non-intersecting shafts also have pitch circles, but the rolling-pitch-circle concept is not valid.

非平行的齿轮，非交叉传动的轴也有节点，但不存在纯滚动节圆的概念。

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Let's say you have two circles, and you want to fill only the non-intersecting sections of these circles. Listing 2 shows how you can do that.

假设有两个圆，若只想填充这两个圆非交叉的部分，可使用清单2所示的方法。

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