该方程右边的函数在实数域内不连续，是一个高度非线性微分方程组。
The equations are extra nonlinear differential equations. the dexter function is not continuous in field of real number .
通过最小化能量方案极小化代价函数，同时通过定点交替迭代策略将非线性方程进行线性化处理，快速恢复图像。
The cost functions are minimized by alternate minimization scheme. The nonlinear equations are linear by fixed-point iteration scheme.
对此，本文根据天然气流动情况，引入一线性化函数，通过求解非线性方程得到了解析解。
Therefore, this paper introduces a linearized function in light of the flow conditions of natural gas and obtains an analytic solution through solving nonlinear equations.
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