解线性最小二乘问题时，通常都要解所谓正规方程。
Generally, a linear least squares problem leads to ihc solution of the so called normal equation.
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。
Power system state estimation is usually formulated as a weighted least-squares problem and is solved iteratively by the normal equation method.
讨论了最小二乘多项式拟合中引起正规方程组病态的两个重要原因：节点对原点的偏离程度和节点坐标的数量级。
In this paper two reasons-the deviation of the data from the origin and the size of the data-causing the ill-conditioned normal equations in the least square fitting of a polynomial are discussed.
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。
By contrast with trial method, normal equation method and plan solution method, present solution has good convergence stability, practicability and higher calculation accuracy.
利用奇点理论给出了空穴分岔方程在分岔点的等价正规形。
Equivalent normal forms of the cavitated bifurcation equation at the bifurcation point were presented by using singularity theory.
利用改进的准正规模型，根据热力学理论获得了决定二元液-固相平衡的曲线方程。
Using the revised quasiregular model, we obtained the equations of the liquid-solid phase equilibrium curves of a binary system according to thermodynamic theory.
这称为正规微分方程组。
由混合坐标方程导出姿态动力学逆传递函数矩阵，并分析其正规性。
The inverse transfer function matrix of attitude dynamics is derived from the hybrid coordinates equations, and its normality is analyzed.
形式很普通的微分方程组可以化为正规的形式。
Very general systems of differential equations can be reduced to the normal form.
本文利用刚体定点运功的一阶正规型方程组建立带液体环阻尼器的自由陀螺仪的运动方程。
The motion equations for a free gyroscope with an annular damper are established by application of the equations of 1-st order in normal form for the motion of the rigid body.
首先，采用间接制定正规化边界积分方程的奇异积分处理，可以计算出准确的边界未知量。
To begin with, a regularized boundary integral equation with indirect formulation is adopted to deal with the singular integrals and the boundary unknown quantities can be calculated accurately.
首先，采用间接制定正规化边界积分方程的奇异积分处理，可以计算出准确的边界未知量。
To begin with, a regularized boundary integral equation with indirect formulation is adopted to deal with the singular integrals and the boundary unknown quantities can be calculated accurately.
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