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bo·ron AHD[bôrʹŏn', bōrʹ-] D.J.[ˈbɔːrˌɒn, ˈbəʊr-]K.K.[ˈbɔrˌɑn, ˈbor-]n.Symbol B （名词）符号 B - A soft, brown, amorphous or crystalline nonmetallic element, extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys. Atomic number 5; atomic weight 10.811; melting point 2,300°C; sublimation point 2,550°C; specific gravity (crystal) 2.34; valence 3. See table at element 硼：一种柔软、棕色、无定形或结晶的非金属元素，主要从四水硼砂和硼砂中提取，用于闪光剂、推进混合物、原子反应控制剂、磨砂和硬合金中。原子序数5；原子量10.811；熔点2,300°C；沸点2,550°C；比重（晶体）2.34；化合价3 参见 element
- bor(ax) 1bor(ax)1
- (carb)on (carb)on
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