双语例句
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Meshing spur gears must have the same diametral pitch.
互相啮合的直齿圆柱齿轮，必须具有相同的径节。
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Universal gearbox allows inch, metric, diametral, and module pitch threads without changing gears.
通用变速箱允许英寸，公制，直径，螺距螺纹和模块不改变齿轮。