A.≤0.08%或≤0.03% B.≤0.01%或≤0.03% C.≤0.03%或≤0.08% D.≤0.08%或≤0.01%
A.十分?jǐn)?shù) B.百分?jǐn)?shù) C.千分?jǐn)?shù) D.萬分?jǐn)?shù)
A.十分?jǐn)?shù) B.分?jǐn)?shù) C.千分?jǐn)?shù) D.萬分?jǐn)?shù)