sewerage (system)是什么意思

用法例句

It was found that the Kd and SOUR were high in high OLRs,and the yielding water SS increased with the increase of Kd,and the concentration of yielding water NO3--N decreased with the increase of Kd.

结果表明Kd和SOUR均在高进水负荷条件下大,出水SS随着Kd的增大而增大,但出水NO3--N则随着Kd的增大而减小。