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。
This paper points out the problems existed in the experiment to test the characteristic curve of diode by voltammetry, and presents a method to improve the experiment.
指出了一般用伏安法测二极管特性曲线一实验中存在的问题，同时给出其改进方法及在实验中应注意的问题。
The theory method, nonlinear analysis and resilience characteristic curve of member design are established.
建立了构件设计的理论方法和非线性分析恢复力特性曲线。
Waterdrive characteristic curve is an important method for forecasting production rate and commercial reserves of waterflood field.
水驱特征曲线法是用来预测水驱油田的产量及可采储量的重要方法。
The method of data treatment concerning hydroturbine synthetic characteristic curve by radial basis networks is introduced.
介绍了利用径向基函数神经网络进行水轮机综合特性曲线数据处理的方法。
Represents a new kind of generalized extended interpolation method to realize the high precision fitting of characteristic curve of fan.
提出采用一种新的广义延拓逼近法，来实现煤矿通风机高精度特性曲线的拟合。
Objective: to inquire into distance method of the characteristic curve for screen-film system.
目的进一步探讨增感屏胶片系统特性曲线距离测定法。
A new method of constructing compound CAM moving curve is proposed by taking some characteristic values as an optimization object.
提出一种以特性值为优化目标构造复合型凸轮运动曲线的新方法。
In this paper, the concept and the method of scaling are described, and some examples of scaling of soil water characteristic curve and unsaturated hydraulic conductivity are given.
本文简述了标定的原理、田间土壤水分特征曲线和非饱和导水率的标定方法，还给出了水分运动参数标定的实例。
A new method is suggested for determining the characteristic curve of a plate, as well as the magnitude zero point, using PDS microdensitometer data of stars of known brightness on the plate.
本文提出一种新方法——密度矩和法，用底片上已知亮度恒星的PDS测微密度数据来同时决定底片特性曲线和星等零点。
A new method to calculate OOIP of each kind of oil well is established by means of integrating waterflood characteristic curve and relative permeability curve.
建立了利用水驱特征曲线和相对渗透率曲线结合计算各类井地质储量的新方法并对喇萨杏油田各类井地质储量进行了测算。
By making use of characteristic curve of sampling inspection, this paper analyses the irrationality of sampling inspection by percentage, and gives a method of improvement.
利用抽检特征曲线，分析百分数抽检的不合理性，并给出了改进的方法。
The method of using cubic spline function as fan characteristic curve fitting is introduced.
介绍了用三次样条函数作通风机性能曲线拟合的方法。
The method of using cubic spline function as fan characteristic curve fitting is introduced. The calculating example is provided and description is made for the specific problem.
介绍了用三次样条函数作通风机性能曲线拟合的方法。列出了计算实例，并对具体问题做了说明。
The characteristic of quick-return of offset double crank slider mechanism was analyzed in this paper. The synthesis method and curve of this mechanism with minimum transmission angle were presented.
本文分析偏置双曲柄滑块机构的急回运动特性，给出了按最小传动角设计偏置双曲柄滑块机构的设计方法和设计曲线。
The method of uniaxial tension test of concrete under ultra-low loading rate is described. It can be used to determine the characteristic curve of concrete under loading condition.
本文介绍极慢速加荷条件下混凝土轴向拉伸试验方法，它能测定混凝土受载时的特性曲线。
Principle of negative hydraulic head and multi-pore materials were used to put forward a new setup and method for the measurement of soil-water characteristic curve.
负水头控制原理与多孔膜材料相结合提供了一种测定土壤水分特征曲线的新装置和新方法。
The characteristic curve of IGBT is fitted with polynomial to establish its loss model, based on which its loss calculation method is proposed.
采用多项式方法拟合IGBT器件手册提供的特性曲线，建立多项式损耗模型，给出了一种基于曲线拟合理论计算损耗的方法。
In the paper a method of any characteristic polygon controlling-based generation method of higher random curve is presented.
提出了一种基于任意特征多边形控制的随机曲线生成方法。
The characteristic of the pulp permeability was investigated by experiment. A method to evaluate the permeability properties of pulp with the permeability curve was suggested.
文章研究了纸浆滤水实验和制浆造纸生产过程中与纸浆滤水相关操作的共性，提出了用滤水曲线评价纸浆滤水性的方法。
The amplitude frequency characteristic curve and loss factor of laminated damping steel sheet have been calculated and measured with the sine scanning excited method.
本文应用能量原理和阻尼分析的方法解决了平纹织物复合材料的复杂结构损耗因子的计算问题。
The amplitude frequency characteristic curve and loss factor of laminated damping steel sheet have been calculated and measured with the sine scanning excited method.
本文应用能量原理和阻尼分析的方法解决了平纹织物复合材料的复杂结构损耗因子的计算问题。
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