boron

名词 boron:

1. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
   同义词：B, atomic number 5

1. A substance, such as boron, added in small amounts to a pure semiconductor material to alter its conductive properties for use in transistors and diodes.
   掺杂质，掺质剂加入纯半导体材料中的少量硼等物质，用于晶体管和二极管中以改变半导体的导电率

bo.ron

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 0.8; 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0.8；熔点2,300=C；沸点2,550=C；比重（晶体）2.34；化合价3参见 element

来源：
bor(ax)
bor(ax)
(carb)on
(carb)on