微星藻属...

Micractinium的音标：...

n.锕...

actinium的音标：actinium的英式发音音标为：[æk'tɪniəm]actinium的美式发音音标为：[æk'tɪniəm]...

Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 ( actinium ) through 103 ( lawrencium ).锕类任何化学性质相似, 原子序数在89 ( 锕 ) 与103 ( 铹 ) 之间变化的放射性元素.The extraction mechanism and separat...