Least square method of polynomial or the method based on the given function are used to fit pump characteristic curve in pump selection or operation.
在水泵的选型或运行中，通常采用多项式的最小二乘法或根据假设的函数关系来拟合水泵性能曲线。
In the drawing module of graph, geometric figure of simulated domain, thermal circulation curve and selection probability of each site and grain size distribution are visual.
在图形显示模块中，实现了模拟区域几何形状、格点热循环曲线、格点选择概率及晶粒尺寸分布的可视化。
In the course of calibration of carbon thermometer, the selection of the experimental formula of carbon thermometer will affect the validity of the calibrating curve greatly.
在碳电阻温度计标定过程中，经验公式的选用对碳电阻温度计标定曲线的正确性有着重大的影响。
The author proposes taking the comprehensive load curve of the screw drill-drill bit-oil well system as the basis for the proper selection and use of screw drills.
提出了以螺杆钻具钻头油井系统的综合负载特性曲线作为螺杆钻具正确选择和使用的依据。
Centrifugal pump performance curve can be used as the basis for pump selection.
离心泵的性能曲线可作为选择泵的依据。
The selection of spectral line, the analytical conditions, the calibration curve and the sample analysis were discussed.
并对测定氮光谱线的选择、氮的分析条件、校准曲线的拟合及样品分析等问题进行了讨论。
The selection of secure elliptic curves and the scalar multiplications of elliptic curves are two important problems in the practice of efficiently implementing an elliptic curve cryptosystems.
安全椭圆曲线的选取和标量乘法的快速计算是有效实现椭圆曲线密码体制的两个主要问题。
Five aspects should be paid attention to solve the color difference, those are pretreatment, dyes selection, process curve, parameter setting of dyeing machine, and auxiliary application.
文中总结了解决纯棉针织物色差问题应重视的五个方面：前处理、料选择、艺曲线、机参数设定和助剂使用。
Here the selection of base circle radius and its effect upon the assessment of departure from roundness is discussed, and the corresponding curve is given.
这里讨论了“叠加基圆法”中基圆半径的选取原则及其对不圆度评定的影响，并作出关系曲线。
Pump selection, and sometimes need to consider the production process requirements, selection of different shapes QH characteristic curve.
选泵时，有时须考虑生产工艺要求，选用不同形状Q - H特性曲线。
Then, the safety of elliptic curve based on OEF is discussed, and the selection criterions and the selection algorithm of secure elliptic curve are given.
其次讨论最优扩域上的椭圆曲线安全性问题，给出了安全椭圆曲线的选取准则和选取算法；
The selection of secure elliptic curve and the high efficiency in implementation are two main research for ECC.
安全椭圆曲线的选取和椭圆曲线密码的快速实现是椭圆曲线密码的两个主要的研究内容。
The selection of secure elliptic curve and the high efficiency in implementation are two main research for ECC.
安全椭圆曲线的选取和椭圆曲线密码的快速实现是椭圆曲线密码的两个主要的研究内容。
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