... 单位间的换算因子 conversion factor between units 数值方程 numerical value equation 量的数值方程 numerical value equation of quantity ...
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数值方程式 Keywords quality of soil moisture content
微分方程数值解 Numerical Methods for Differential Equations ; Numerical Solution of Differential Equations ; Numerical solution of partial defferential equatio
运动方程数值解 [数] numerical solution of motion equation
微分方程数值解法 Numerical Solutions for Differential Equations
偏微分方程数值解 Partial Differential Equation ; Numerical Solution of Partial Differential Equation ; PDE
以数值方法解方程 solving equations numerically
NS方程数值解 numerical calculation of NS equation
工程数值方法 [数] numerical methods in engineering
NS方程数值模拟 numerical simulation by NS equations
又简介根据达西定律和水均衡原理，建立了三维有限差分数值方程及其解法。
It is briefly introduced that three-dimensional finite difference numerical equation is built according to Darcy's law and water equilibrium principle.
数值方程显示：内部收益率与井深成负相关关系，与单井日产量成正相关关系。
It shows negative correlation between internal returns ratio and well depth, and positive correlation between interval returns ratio and daily production of single well.
这个数值是用及其巧妙的方程解出来的。
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