渐开线标准直齿圆柱齿轮正确啮合的条件是:()

A.m1=m2=ma1=a2=a B.m1=m2≥ma1=a2=a C.m1=m2≤ma1=a2=a D.m1=m2=ma1=a2≤a

时间:2023-08-06 10:04:53

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