A-A+

promethium

音标与读法

这里为大家介绍下promethium 是什么意思,希望能帮助到各位朋友。

中英文翻译

n.

【化学】钷〔略 Pm;旧名 illinium ?〕。

a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium

同义词:Pm, atomic number 61,

Promethium, originally prometheum, is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is one of only two such elements that are followed in the periodic table by elements with stable forms, a distinction shared with technetium.

例句与用法

1.Examination of radioactive materials for foods - determination of promethium - 147

食品中放射性物质检验钜- 147的测定

单词网DaNcI.583316.COM

Copyright © 58单词网 583316.Com.  SiteMap.  

分享到: