短語詞組短語residual radioactive contamination 剩余放射性沾染residual mercury contamination 汞殘留oil residual contamination 石油殘留污染pesticide residual contamination 農(nóng)藥殘留污染residual fuel oil contamination 殘余燃料油污染residual contamination rate 攜帶污染率 返回 residual contamination