A.分度圓相切 B.齒頂圓相切 C.基圓相切 D.以上均不對(duì)
A.一對(duì)漸開線齒輪的瞬時(shí)傳動(dòng)比等于其基圓直徑的反比 B.一對(duì)漸開線齒輪的瞬時(shí)傳動(dòng)比等于其齒頂圓直徑的反比 C.一對(duì)漸開線齒輪的瞬時(shí)傳動(dòng)比等于其分度圓直徑的反比 D.一對(duì)漸開線齒輪的瞬時(shí)傳動(dòng)比等于其節(jié)圓直徑的反比