A.0.08±0.02 B.0.20±0.05 C.0.50±0.02 D.0.80±0.05
A.0.02~0.10 B.0.05~0.15 C.0.15~0.55 D.0.55~0.75
A.過(guò)渡 B.過(guò)盈 C.間隙 D.不定