Because the hydraulic parameters of each component of the network are determined by a nonlinear flow formula, the solution to this system can be got by the Nexvton Raphson method.

由于管网各管段的水力参数均系非线性方程决定，因此，系统工况可采用牛顿法求解。

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The generalized large well method is not applicable when the influence radius doesn't exit and the complicated hydrogeological condition is not fit to the condition of Dupuit well-flow formula.

但是当水文地质条件复杂，不能引用影响半径时，就不符合裘布依井流公式的适用条件，也就不能再用大井法计算排水量；

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The formula forcalculating NPV can be written as remembering that C0, the cash flow at time 0(that is, today), will usually be a negative number.

我们将计算净现值的公式计作C0，在时点0（就是指今天）的现金流通常是一个负数。

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The formula: have management borrow money against the assets and cash flow of a company, and use that money to buy a controlling stake of it.

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It would appear that building a strong Minor League system that produces a consistent flow of young, homegrown stars who stay with a team for their careers is a formula which produces more winning franchises than relying on high spending for aging free agents.

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