3317| 6
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螺距誤差對(duì)互換性的影響 |
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點(diǎn)評(píng)
你可以這樣想,這個(gè)牙胖點(diǎn)呢?瘦點(diǎn)呢?中徑只限定了徑向長度。牙角直限定了角度,但還有一個(gè)牙寬在里面不是?
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