如果海洋物种吸收放射颗粒的速度快于排出，放射性物质就能够聚集起来并影响食物链上层的大型动物。
If Marine species take up these radioactive particles faster than they break them down, the radiation can concentrate and affect larger animals that eat them.
氡是天然放射性惰性气体，是铀系衰变链中的一个衰变产物。
As a product from the uranium disintegration, radon is a natural radioactive idle gas.
研制了聚变一裂变混合堆放射性计算程序fdkr和配套的衰变链数据库af—DCDL—IB。
A computer code FDKR and its associated data library AF-DCDLIB have been developed for fusion-fission hybrid reactor radioactivity calculations.
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