underflow是什么意思

网络释义

用法例句

To reveal the nitrogen purification mechanism in subsurface-flow constructed wetlands,nitrification and denitrification intensities were studied in reed,canna and unplanted wetlands respectively.

对芦苇、美人蕉、空白潜流型人工湿地中硝化、反硝化作用强度进行了对比研究。

It shows that vertical-flow of the efficiency of removing COD_(Cr),NH_3-N is better;but subsurface-flow removing NO~-_3-N is better.

通过小型垂直流与潜流人工湿地实验,监测了水力停留时间为50小时下的CODCr、TP、NO3--N、NH3-N等指标,旨在通过实验,比较垂直流芦苇人工湿地与潜流芦苇人工湿地对化粪池出水的净化效果。

Removal of nitrogen and phosphorus by integrated subsurface flow-upward vertical flow constructed wetland process;

潜流-上行垂直流复合人工湿地对氮磷去除效果

Culture of polo: undercurrent of Tang culture;

马球文化:唐文化的潜流

With the growth of modernity accelerating the transformation of the traditional society into a modern society,the traditional farmers are undergoing great changes in economy,politics,ideology,etc in the process of transformation,and the undercurrent of Populism also exists in such society.

在这个过程中,传统的农民在经济、政治和思想文化等方面都发生着重大的变化,一定程度上存在着的民粹主义潜流。

Studies on nitrogen and phosphorus removal in new combined substrate subsurface constructed wetlands;

新建组合填料潜流湿地脱氮除磷研究

Selection and performance estimation of media for subsurface constructed wetlands to treat oil-contaminated surface water;

处理含油地表水体的潜流湿地填料筛选及其性能评价

Nitrogen removal in subsurface constructed wetland treating agriculture non-pointed wastewater was studied in pilot-scale.

研究证明潜流湿地氮去除效率和水力停留时间呈正相关关系 ,芦苇床的脱氮效果明显好于茭草床和空白床 ,名义水力停留时间大于 5d时 ,芦苇、茭草潜流湿地脱氮效率可以达到 60 %以上 。