短语词组短语defoliant t 脱叶磷;脱叶剂cotton defoliant 棉花脱叶剂Deleaf Defoliant 脱叶亚磷chemical defoliant [农药]化学脱叶剂def defoliant 脱叶磷defoliant poisoning 脱叶剂中毒systemic defoliant 内吸落叶剂 返回 defoliant