hollow alumina micro ball 氧化铝空心微珠
Alumina hollow ball is the hollow spherical light insulating refractory made from alumina blown out of electric furnace through high temperature melting procedure.
氧化铝空心球是采用氧化铝在电弧炉内经高温熔融后吹出的空心球状轻质隔热耐火材料。
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