A.7:3 B.1:1 C.3:1 D.2:1
A、三氧化硫(質(zhì)量分?jǐn)?shù))≤1.0% B、離子(質(zhì)量分?jǐn)?shù))≤0.06 C、燒失量(質(zhì)量分?jǐn)?shù))≤5.0%