A.1.36±0.1B.1.36±0.2C.1.36[+0.1/-0.2]D.≥0.4
A.≥0.4B.≥0.5C.≤0.4D.≤0.5
A.352226X2-2RZ和SKF197726B.HRN-D和HRW-DC.SE-BT2-8503A-23D.353130X2-2RZ