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修形有图,求真相,请大侠们评价评价~~ |
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点评
还想请教下大侠,齿轮中的相应渐开线上的压力角的对应的圆的直径有什么公式算没咯?
如压力角为18°21′08″的角度对应的φ943.36是通过哪个公式来的了怎么来的了?
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