A.熔融指數(shù) B.沖擊強(qiáng)度 C.等規(guī)指數(shù) D.洛氏硬度
A.70% 30% B.80% 20% C.90% 10%
A.0.05% B.0.04% C.0.03% D.0.02%
A.0.5 B.1.0 C.1.5 D.2.0
A.400 B.430 C.450 D.480