商品的边际替代率和最优解存在定理的介绍则是对前面理论部分的延伸。
The marginal rate of substitution of goods and the existence theorem of the optimal solution is to introduce some of the previous extension of the theory.
消费者选择两种商品的消费以便边际替代率等于相对价格。
The consumer chooses consumption of the two goods so that the marginal rate of substitution equals the relative price.
生产要素的配置变化内生着技术进步，而农业技术进步的基本性质表现为由生产要素决定的新的生产函数和要素资源间边际技术替代率发生变动。
The technological progress is embodied in changes in allocating of factors, while new production function by factors and change in marginal rate of substitution are basically characteristic of it.
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