递减

A regressive tax, like the poll tax, takes proportionately more of a poor person’s income.

像人头税一样，递减税占穷人收入比例更。

Definition form Wikipedia: A degauss causes a magnetic field to oscillate rapidly, with decreasing amplitude.

摘自维基百科定义：消磁器产生幅度递减快速交变磁场。

As the time went on, the residual weight of isoprocarb in soil decreased, which was in keeping with the first-order kinetics equation.

异丙威菜和壤中量随着时间延长而递减,符合一级反应动力学方程。