If added 6 percent of polyethylene in domestic asphalt AH-70,the PE modified asphalt can be made; and then added 6 p......

本文在中国不完全要素市场和农民分化的背景下,将农户禀赋约束和农业技术属性(要素投入密集度与技术风险)联结到一起,构建了考虑禀......