从原理上判断和估计了电熔板状刚玉结晶体和阔气孔的形成条件。
The forming condition of crystal and closed pore in tabular alundum produced with electric melting is estimated and determined theoretically.
棕刚玉是以铝矾土等为原料，经高温熔炼结晶而成。
Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials.
棕刚玉是以铝矾土等为原料，经高温熔炼结晶而成。
Brown aluminium oxide Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials.
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