investment estimation短语¹⁴⁴⁹⁷²⁺² 基本例句 投资估算 Establishing an index system and scaling the weight of every index reasonably is an effective way to evaluate the investment estimation of the land- developing railway, which have an obvious external. 构建指标体系，合理确定各指标的权重系数，是量化评价外部性显著的国土开发型铁路的可行思路之一。 dictall