單項(xiàng)選擇題已知一對(duì)直齒圓柱齒輪傳動(dòng)的重合εα=1.13,則兩對(duì)齒嚙合的時(shí)間比例為()。一對(duì)是87%、兩隊(duì)是13%

A.113%
B.13%
C.87%
D.100%


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