A.1/10 B.1/20 C.1/30 D.1/50
A.1/100 B.1/50 C.1/30 D.1/20
A.輪齒進(jìn)入嚙合,密封容積增大 B.輪齒進(jìn)入嚙合,密封容積減小 C.輪齒脫開嚙合,密封容積減小 D.輪齒脫開嚙合,密封容積增大