The spherical gear is a new type of gear formed by attributing ring teeth on a spherical face.

球齿轮是在其球冠面上分布着一道道环形齿的一种新型齿轮。

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The spherical gear is a new type of gear formed by attributing ring teeth on a spherical face.

球齿轮是在其球冠面上分布着一道道环形齿的一种新型齿轮。

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