Power system state estimation is usually formulated as a weighted least-squares problem and is solved iteratively by the normal equation method.
电力系统加权最小二乘准则的状态估计，通常采用正规方程法。
By contrast with trial method, normal equation method and plan solution method, present solution has good convergence stability, practicability and higher calculation accuracy.
与普通的试算法、正规方程法、规划求解法等数解法及图解法相比，该算法具有良好的收敛稳定性、方便实用性及较高的计算精度。
On the basis of the material balance equation, this paper develops a method to predict the formation pressure using cumulative production data for normal pressure confined gas reservoir.
以正常压力系统封闭气藏的物质平衡方程序为基础，建立一种利用累积产气量计算气藏地层压力的方法。
Objective: to establish the measurement method of the normal orbital and optic canal by ct scanned, and to explore the clinical value of the orbital volume and its regressive equation.
目的：建立正常人眼眶及视神经管骨性径线ct测量的方法，探讨CT测量眼眶容积及其回归方程的临床意义。
The common method to quadric surface equation is to get the Normal Component first, and then write out the equation through dot method.
求切平面方程的一般方法是先求切平面的法向量(借助偏导)，再用点法式写出切平面的方程。
The causes of rank defect of normal equation are analyzed, and then the problems are solved by advancing different method to different causes.
分析了法方程出现秩亏的可能原因，针对不同的原因提出了解决办法。
To study the change of particle size distribution, a general dynamic equation is established based on the moment method and the assumption of a reasonable log-normal size distribution.
通过对颗粒的分布作出一个合理的对数正态分布假设，运用矩方法求解颗粒的通用动力学方程，来研究颗粒的尺寸分布情况。
Afterwards, using the boundary element method to solve the integral equation we can obtain the magnetic potential and its normal derivative on the surface of the magnetic body.
然后用边界单元法解积分方程，求得磁性体表面的磁位及其法向导数。
According to the relationship between ellipse and its normal, the analytic equation of ellipse normal solution is built as well as the complicacy of analytic method.
根据椭圆与其法线的几何特征关系建立了求解法线的解析方程，分析了法线问题解析求解的繁杂性。
A new equation for calculating heat of vaporization of pure compounds at normal boiling points is derived with the residual function method improved by the new RK EOS which was proposed in 1980s.
应用八十年代提出的新r - K状态方程序，改进纯物质常沸点汽化热的剩余函数预测法，推导出纯物质常沸点汽化热的新计算方程序。
A new equation for calculating heat of vaporization of pure compounds at normal boiling points is derived with the residual function method improved by the new RK EOS which was proposed in 1980s.
应用八十年代提出的新r - K状态方程序，改进纯物质常沸点汽化热的剩余函数预测法，推导出纯物质常沸点汽化热的新计算方程序。
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