短语词组短語defoliant t 脫葉磷;脫葉劑cotton defoliant 棉花脫葉劑Deleaf Defoliant 脫葉亞磷chemical defoliant [辳葯]化學脫葉劑def defoliant 脫葉磷defoliant poisoning 脫葉劑中毒systemic defoliant 內吸落葉劑 返回 defoliant