light insulating refractory
... 绝热耐火材料insulating refractory 轻质耐火材料light insulating refractory 袖砖sleeve brick ...
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light insulating refractory
轻绝缘耐火材料
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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