economic diameter of pipe
economic diameter of pipe
经济管径
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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