基本解释重金屬同根派生 Heavymetal相关词英汉例句Keywords Surficial sediment;Surface coating;Non-residual fraction;Selective extraction;Heavymetal;Adsorption; 表層沉積物;生物膜;非殘渣態;選擇性萃取;重金屬;吸附;harmful heavymetal 有害重金屬Heavymetal contamination 重金屬汙染Heavymetal更多例句