3、計算過程 (注意：配料總重量為四種配料重量之和) C₁=60x3.0/100+40x0.6/100+1x99/100 =1.8+0.24+0.99 =3.03 Si₁=60x2.0/100+40x0.3/100+1x50/100 =1.2+0.12+0.5 =1.82 C₂=3.03(1+0.1)=3.333 Si₂=1.82(1-0.1)=1.638 C=3.333x100/102=3.268=____1___% Si=1.638x100/102=1.606=___2____% CE=3.268+1/3(1.606)=3.803=____3___% 1.