created sense approved 降尘/降塵 · jiàngchén · fallout
降尘 / 降塵
jiàngchén
fallout
the phenomenon of dust, volcanic ash, or radioactive particles settling from the atmosphere
核爆炸后产生的降尘具有很强的放射性。
created sense approved 降尘/降塵 · jiàngchén · particulate matter
降尘 / 降塵
jiàngchén
particulate matter
solid particles in the air that settle onto the ground, often used as an environmental indicator
该城市的月平均降尘量有所下降。