Using system engineering theory and method, system model and simulation method, the paper analyses the conflict between supply and demand of water resources within the system.
文章用系统工程的理论和方法，用系统模型和模拟的方法，分析系统内水资源的供给与需求。
The theory of supply and demand, Sraffa's model and the labor theory of value are the three kinds of price theories.
供求决定论、斯拉法模型和劳动价值论是三类价格决定理论。
It is the first question to answer what is the appropriate amount of money before building the model of money supply and money demand.
在建立货币供给模型与货币需求模型之前，首先要回答什么是适度货币量的问题。
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