A.鉆石比率 B.拋光質(zhì)量 C.對(duì)稱(chēng)性偏差 D.B+C
A.<1.0% B.<0.5% C.>2.0% D.>2.5%
A.>2.5% B.>3.0% C.>3.5% D.4.0%