circulating flow是什么意思

用法例句

In order to improve A/O process denitrification efficiency,five integrated control strategies of nitrate recirculation flow and external carbon dosage for denitrification were proposed and evaluated using the COST/IWA simulation Benchmark.

为了提高A/O工艺反硝化效果,应用COST/IWA-Benchmark基准对5种内循环回流量和外碳源投加综合控制策略进行了比较。