rate of descend

常见例句

The effects of the amount H2O2 used, rare earth metals, temperature and reaction time on the rate of COD descend were also investigated.
探讨了双氧水加入量、稀土量、温度及反应时间对COD去除率的影响。
Results 1 The onset constituent ratio and fatality rate of liver cirrhosis reposefully descend, but the in-patient quantity take on ascendance trend.
结果：1、十一年来新医大一附院消化科肝硬化的发病构成比及病死率平稳下降，但住院量有上升趋势。
About 20 in the last yearses, at the total death rate of the our country population descend of in the meantime the outbreak rate of the chronic disease death rate but present up-trend.
近20年来，在我国人口总死亡率下降的同时慢性病的发病率死亡率却呈上升趋势。