promethium 详细解释
promethium
[prə'mi:θiəm]
n. [化]钷（稀土金属元素, 符号 Pm, 原子序61）
词形变化
简写符号: Pm |
英英释义
名词 promethium:
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
补充
promethiumpromethium英:[prəˈmi:θiəm] 美:[prəˈmiθiəm]n.1.钷(元素符号为：Pm)热门单词推荐
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