soil poisonous substance土壤有害物質
Hazardous or Poisonous Substance有害性或毒性物質
poisonous substance removal消除有毒物質
harmful poisonous substance有害毒物
specific poisonous substance特定毒物
low-poisonous substance低毒類物質
Poisonous substance residue有毒物質殘留
specified poisonous substance特定毒物
Poisonous and harmful substance有毒和有害物質;有毒有害物質