3325英语网 英语单词
Promethium的音标发音
Promethium
英式发音：[prә'mi:θiәm]
美式发音
(noun.) 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.
手打:西摩
(noun.) 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.
手打:西摩