剩余放射性 shèngyúfàngshèxìng residual radioactivity Origin Definitions Defs Strokes Stroke Words Sentences Sents 剩余 剩餘 shèngyú noun surplus an amount or quantity remaining after needs have been satisfied; remainder放射性 fàngshèxìng noun radioactivity the property of certain elements to spontaneously emit radiation as their atomic nuclei decay; also used to describe things that are radioactive