2.氮化硼bn晶体有多种相结构.六方相氮化硼是通常存在的稳定相与石墨相似只有层状结构可作高温润�剂.立方相氮化硼是超硬材料有优异的 Template




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tomski2.氮化硼bn晶体有多种相结构.六方相氮化硼是通常存在的稳定相与石墨相似只有层状结构可作高温润�剂.立方相氮化硼是超硬材料有优异的 coloring