A.2CZ5、2CZ50 B.2AK4、2AK6 C.2CP1A、2CP6K D.2CK1、2CK6
A.352±1mm B.352±2mm C.352±4mm D.352±5mm
A.≤0.5mm B.≤1mm C.≤1.5mm D.≤2mm