1) two-dimensional accumulation
二维平面拟合
1.
By considering both the operational state and topological parameters,the grid vulnerability analyzing method based on the two-dimensional accumulation means is presented,in which the modified small world network model is employed under given power system conditions.
文中同时考虑影响电网脆弱性的运行状态和拓扑参量因素,在一定的电网运行条件下,结合加权改进的小世界模型,提出了基于二维平面拟合的电网脆弱性分析方法。
2) plane fitting
平面拟合
1.
In this approach,the actual illumination distribution was estimated using plane fitting,and then the restoration of the image was performed according to the invariance of the pixel reflective coefficient.
该方法基于平面拟合来估算出实际的光照强度分布,并根据图像各点的反射系数不变这一特性来对图像进行修正。
2.
The results of planar parameters estimation are not accurate by traditional plane fitting methods to point clouds,because the gross error and outliers are not considered.
针对常用的平面拟合方法在点云数据存在粗差或异常值扰动时,存在拟合结果不稳定的缺点,提出了一种稳健的点云数据平面拟合方法。
3.
This paper discribes the study on the rings prediction in construction of long-distance tunnel shield,a rings prediction model based on coordinate transformation and plane fitting is established,and a computer analysis system is then established for the model as well.
以隧道盾构中通用楔形管片的选型为研究对象,推导了基于坐标转换和平面拟合的管片选型数学模型以及轴线偏差量的计算公式。
3) fitting plane
拟合平面
1.
In the light of the question of some data-fitting plane, this paper builds mathematical model.
为使数据点与拟合平面的最大偏差达到最小,提出 一种求最佳平面的新方法,并给出严格的理论证明。
4) plane two-dimension
平面二维
1.
In this paper, the plane two-dimension numerical simulation is used to study the scour in a river whose bed is mostly cracked bedrock at the lower reaches of a spillway.
对溢洪道下游破碎基岩为主的非沙质河流冲刷进行了平面二维数值模拟计算方法的探讨。
2.
The plane two-dimension numerical simulation is used to study the simulation and calculation of the scour in a river whose bed is mostly cracked bedrock at the lower reaches of a spillway.
采用平面二维数值模拟方法 ,对溢洪道下游河床以破碎基岩为主的河流冲刷进行了模拟计算方法的探讨 。
3.
Based on curvilinear grids,plane two-dimension flow mo.
基于曲线坐标系，建立了平面二维水动力数学模型。
6) 2D composite model
平面二维混合模型
补充资料：非线性最小二乘拟合
分子式：
CAS号：
性质：用最小二乘法拟合非线性方程。有些变量之间的非线性模型，通过变量变换可以化为线性模型，此称为外在线性。而有些变量之间的非线性模型，通过变量变换不能化为线性模型，通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε，其残差平方和。S(θ)是θ的函数，当模型关于θ是非线性的，正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值，拟合非线性回归方程。
CAS号：
性质：用最小二乘法拟合非线性方程。有些变量之间的非线性模型，通过变量变换可以化为线性模型，此称为外在线性。而有些变量之间的非线性模型，通过变量变换不能化为线性模型，通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε，其残差平方和。S(θ)是θ的函数，当模型关于θ是非线性的，正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值，拟合非线性回归方程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条