短語詞組短語fall -out 失去同步;附帶成果;墜塵Fall -out ratio 誤檢率downwind fall -out 順風落塵tropospheric fall -out 對流層沉降upwind fall -out 上風落塵fall angle out deposition 落散物沉降global fall -out 全球性散落local fall -out 區(qū)域落塵fall l out 脫落;爭吵radioactive fallout 放射性塵降物 返回 fall out