剩余放射性剩餘放射性

shèng yú fàng shè xìng

Meaning

residual radioactivity

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Characters

剩shèngleftovers, residue, remains乘刂余yúsurplus, remainder; surname人放fàngto release, to liberate, to free方攵射shèto shoot, to eject, to emit身寸性xìngsex, nature, character; suffix converting a verb to an adjective忄生