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单词 platinum
释义 platinum['plætinəm]n. 白金, 铂, 银灰色【化】 铂Pt【医】 铂(78号元素) platinum  plat.i.num  AHD:  [pl²t“n-…m] D.J.  [6pl#tn*m]K.K.  [6pl#tn*m]n.(名词)1. Symbol Pt A silver-white metallic element occurring worldwide, usually mixed with other metals such as iridium, osmium, or nickel. It is ductile and malleable, does not oxidize in air, and is used as a catalyst and in electrical components, jewelry, dentistry, and electroplating. Atomic number 78; atomic weight 195.09; melting point 1,772&9{=}C; boiling point 3,827&9{=}C; specific gravity 21.45; valence 2, 3, 4.See table at element 符号 Pt 铂:一种世界范围内存在的银白色金属元素,常与其它金属,如铱、锇或镍混合,易拉长且具延展性的,在空气中不氧化,可用作催化剂,用于电学元件、珠宝,牙科学和电镀中。原子序数78;原子量195.09;熔点1,772&9{=}C;沸点3,827&9{=}C;比重21.45;化合价2,3,4参见 element2. Color A medium to light gray.【色彩】 铂灰色:亮灰色的媒质语源:1. New Latin 现代拉丁语 2. from Spanish platina [platinum] * see  platina 源自 西班牙语 platina [铂] *参见 platina
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