The traditional economic theories think that the changing in the demand income elasticity and the productivity enhancing are two primary drives of the industrial upgrading.
对产业升级的动因的解释，传统经济理论主要是从需求收入弹性变化和生产率上升两个角度进行的。
Moore studied agricultural productivity and attempted to fit changing values of productivity for plots of corn and other crops to a curve using different values of elasticity.
摩尔研究农业生产力，并企图以适应不断变化的价值，土地生产力的玉米和其他作物，以曲线用不同的价值弹性。
Moore studied agricultural productivity and attempted to fit changing values of productivity for plots of corn and other crops to a curve using different values of elasticity.
摩尔研究农业生产力，并企图以适应不断变化的价值，土地生产力的玉米和其他作物，以曲线用不同的价值弹性。
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