The parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area.
通过对离心式水泵高效工作区的性能曲线进行二次拟合，分析了离心式水泵机组并联调速运行特性。
In local area, we can arrive at preferable precision by GPS height fitting using polyhedral function model.
高程异常一般呈多曲面分布，在局部区域内，建立多面函数模型进行GPS高程拟合，可以达到较高的精度。
The contour line of human brain was simulated by the curve-fitting methods and then the inner area was discretized by advancing-front methods which was improved at last.
利用曲线拟合方法模拟大脑外形轮廓曲线，然后采用波前法完成曲线内部区域的离散化，并对波前法提出了改进措施。
The quantitative analysis result shows that it can reach the given precision by only measuring limited area. It also shows that fitting-curve-method is better than averaging method for precision.
对刀口边缘误差进行了定量分析，得出在一定精度范围内测量光强的区域，定性分析了使用拟合法求MTF优于使用均值法求MTF。
The quantitative analysis result shows that it can reach the given precision by only measuring limited area. It also shows that fitting-curve-method is better than averaging method for precision.
对刀口边缘误差进行了定量分析，得出在一定精度范围内测量光强的区域，定性分析了使用拟合法求MTF优于使用均值法求MTF。
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