(1)腐蚀和磨损 (2)机械故障 (3)性能故障 (4)轴封故障
A.0.05m;0.2m B.0.15m;0.2m C.0.2m;0.1m D.0.2m;0.05m
A.0.15-0.2mm B.0.16-0.24mm C.0.24-0.36mm D.0.26-0.36mm