By example, the node pressure method and steps of the water flow optimal regulation were introduced in order to provide the theory.
结合实例介绍了使用节点压力法实现流量优化调节的方法和步骤，为工程应用提供依据。
By example, the node pressure method and steps of the water flow optimal regulation were introduced in order to provide the theory basis for the engineering application.
结合实例介绍了使用节点压力法实现流量优化调节的方法和步骤，为工程应用提供依据。
The Newton iteration method is used to solve the economic pressure on the unknown node, so as to calculate the economic head loss and economic pipe diameter of each section,.
采用牛顿迭代法来求解各未知节点的经济水压，进而得出各管段的经济水头损失、经济管径和水源二级泵站的经济扬程。
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