衰变 shuāibiàn decay Origin Definitions Defs Strokes Stroke Words Sentences Sents 放射性衰变 fàngshèxìngshuāibiàn radioactive decay 衰变曲线 shuāibiànqūxiàn decay curve decay curves衰变热 shuāibiànrè decay heat heat released as a result of radioactive decay衰变链 shuāibiànliàn decay chain