Adopting prior and posterior deposal system met the demands of filtrating,removing ammonia,rising oxygen,sterilizing and antisepsis.

采前、后处理系统来满足过滤、除氨氮、杀菌消毒、增氧等需。

The criminal network has at its deposal plentiful first class technical know-how and high quality equipment.

罪犯的网络把大量的第一等技术知识-高品质设备，给。