n.先进分子;不断前进的( progressive的名词复数 );进步的;开明的;进行的;
例句:
A Preliminary Exploration into the Quantitative Analysis on Progressive Tax Rate
累进税率定量分析初探
Primary Research about Progressive Die Design System based on KBE
级进模设计KBE系统初步研究
Study on the Design Strategy of the Layout System for Progressive Dies
级进模排样系统设计策略的研究