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иʯӢɰ؟(z)ι˾Qɡ2010꣬λڏV΅^(q)Сһн(jng)(yn)a(chn)N۲ʯӢɰďS
ʯӢɰָ(bio)
SiO298.5%, Fe2O3:0.08%~0.036% TiO2:0.05%
Cr2O3:0.001% Al2O3:= 0.50%( - 0.1) H2O5%
0.71mm(24Ŀ) 0.5%
С0.60mm(28Ŀ)0.105 mm(150Ŀ)92%
С0.1mm(150Ŀ) 3%

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