A.0.1~0.5 B.0.01-0.05 C.0.001-0.005 D.0.0001~0.0005
A.同軸度偏差高 B.對(duì)稱度差 C.對(duì)中性差 D.同軸度偏差低
A.20~30% B.40~70% C.5~10% D.10~20%