... uranium-actinium series 锕铀系 uranium-actinium 锕铀 uranium-bearing 含铀的 ...
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uranium actinium 锕铀
uranium actinium series 锕铀系
uranium-actinium series 锕铀系
actinium uranium series 锕铀系
actinium uranium 锕铀 ; 铀同位素
uranium m actinium 锕铀
uranium m actinium series 锕铀系
non-equilibrium actinium-uranium series 不平衡锕铀系
·2,447,543篇论文数据，部分数据来源于NoteExpress
There are three naturally occurring radioactive series - the thorium series, the actinium series, and the uranium series.
有三个天然存在的放射系列，即钍系、锕系和铀系。
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