放射性材料 fàngshèxìngcáiliào radioactive material Definitions Defs Origin Strokes Stroke Words Sentences Sents 放射性材料 fàngshèxìngcáiliào radioactive material material that contains unstable atoms and emits ionizing radiation
放射性材料 fàngshèxìngcáiliào radioactive material material that contains unstable atoms and emits ionizing radiation
