...母体放射性核素经多代 子体放射性核素最后衰变生成稳定核素，这一过程中发生的一系列核反应被称之为放射系 (radioactive series)。已知存在着三个天然放射系，根据不同的母体分别叫作铀系、钍系和锕 系。
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... 放射性洗消装置 decontamination facility 放射性系 radioactive series 放射性盐 radioactive salt ...
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... radioactive fallout 放射性微粒回降。 radioactive isotope 放射性同位素。 radioactive series 放射系列。 ...
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natural radioactive series 天然放射系
collateral radioactive series 支放射系
radioactive decay series [核] 放射性衰变系 ; 放射衰变系
radioactive disintegration series 放射性蜕变系
natural radioactive decay series 自然放射性衰变系列
A radioactive decay series 她闻到肉腐烂时发出的臭味
N a series of nuclides each of which undergoes radioactive decay into the next member of the series, ending with a stable element, usually lead 放射性系列 [physics] →see uranium series, neptunium series, thorium series, actinium series
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。
Radioactive leaks were detected after a series of explosions and fires at four of its six reactors following the failure of their cooling functions due to the damaged power supplies.
电力供应损坏导致反应堆冷却功能故障，为此六个核反应堆中的四个发生大火和一系列爆炸。随后核电站检测到核泄漏。
A large number of radioactive isotopes among the heavy elements are of three series.
重元素中的大量放射性同位素分别属于三个系列。
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