aggien.农校；农业院校学生；玩具弹子agentn.代理人；代理商；药剂；特工人员agents industry中介服务业agents risk cost代理人风险成本Agents or agency代理方或代理公司agents dispersing分散剂agents' knowledge泽帕agents of production[经] 生产要素agents of metamorphism变质营力agents surface-active表面活性剂agents optimal operation代理人最优行动Agents of Biological Origin生物源战剂

1. Low level environmental agents and adaptive response.
   低水平环境因子与适应性反应。
2. The damaging agents have been grouped according to the type of damage they cause.
   为害的因子按其为害的类型进行归类。