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放射性元素
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promethium
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人工放射性元素,元素符号Pm,原子序数61,半衰期最长的同位素的质量数145.0,属周期系ⅢB族,镧系元素、稀土元素。由希腊神话中从天庭盗取火送到人间的英雄普罗米修斯(Prometheus)而命名。
Chemistry
>放射化学与辐射化学>放射性元素化学>释义
promethium
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single configuration approximation
single-configuration approximation
single constituent and phase system
single containment tank
Single Convention on Narcotic Drugs of 1961
single coppice system
Single-Copy Yuan and Ming Variety Plays with Synopses
single core superconducting composite
single cross
single crystal
single crystal electrode
single crystal growth under microgravity
single crystal melt growth method
single crystal metal strength
single crystal, monocrystal
single crystal semiconductor
single crystal solidification
single crystal solution growth method
single crystal structure analysis
single crystal superalloy
single crystal superalloy casting technology
single crystal vapor growth method
single crystal X-ray diffractometry
single crystal Xray diffractometry
single culture and multiple cultures
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