Subject	English	Chinese
avia.	filter recirculation	〔支〕再循环过滤器
avia.	recirculation filter	再循环过滤器
tech.	recirculation flow in biologic filter	生物滤池回流量
tech.	recirculation flow in biological filter	生物滤池回流量
tech.	recirculation of sewage in high rate biological filters	高负荷生物滤池污水循环
tech.	recirculation rate in biologic filter	生物滤池回流比
tech.	recirculation rate in biological filter	生物滤池回流比
tech.	sand recirculation filter	循环砂滤池