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分界点
相关语句
  demarcation point
    Explanatory of Separable Function Derivability on Demarcation Point
    关于分段函数在分界点处可导性的注解
短句来源
  “分界点”译为未确定词的双语例句
    The main works of thesis are illustrated as follows:1. The processes of flow and sediment from 1950 to 2000 are divided into three phases with the boundary of 1968 and 1986 in the Yellow River estuary.
    1.运用数据平滑处理方法分析得到黄河口1950-2000年的水沙过程以1968年和1986年为变异分界点分三个阶段。
短句来源
    Second, the direction of the pressure changed at the middle motherboard and the direction of front-toe' pressure is different with the back-toe.
    第二种情况为底板压力以底板中部附近为分界点,前后反向;
短句来源
    The authors analysed the function relation and curve characteristics of the flow modulus (K) and elevation(Z) of the compound section. And they probed into using methematic method and numerical analysis to determine the boundary line between the main channel and the side. Then they realize using computer to divide a compound section into main channel and the side.
    通过分析复式断面流量模(K)与高程(Z)的函数关系及其曲线特性,探讨运用数学方法和数值分析确定断面主边槽的分界点,从而实现应用计算机划分断面主边槽
短句来源
  相似匹配句对
    Explanatory of Separable Function Derivability on Demarcation Point
    关于分段函数在分界处可导性的注解
短句来源
    Second, the direction of the pressure changed at the middle motherboard and the direction of front-toe' pressure is different with the back-toe.
    第二种情况为底板压力以底板中部附近为分界,前后反向;
短句来源
    Image of seismic discontinuous points
    地震不连续成像
短句来源
    Analysis of velocity at common-converted-point.
    共转换速度分析
短句来源
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  demarcation point
Therefore, CV would not represent the demarcation point between heavy and severe exercise domains.
      
All piping connection from the demarcation point to the liquefied petroleum gas utilization devices shall be by others.
      
All tank final connections from the demarcation point to the tank dispensing point shall be provided by the LPG system supplier.
      
An entrance room has been provided as the demarcation point for telecommunications service providers.
      
As such, this is a logical demarcation point to terminate RF signals.
      
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On the basis of method of derivative on the left and the right of separable function,the derivability of separable function on demarcation point was simply distinguished,and derivative continuity on demarcation point discussed.

运用研究分段函数的导函数的左、右极限的方法,简便地判明分段函数在分界点处的可导性;同时讨论了分界点处导数的连续性

The authors analysed the function relation and curve characteristics of the flow modulus (K) and elevation(Z) of the compound section. And they probed into using methematic method and numerical analysis to determine the boundary line between the main channel and the side. Then they realize using computer to divide a compound section into main channel and the side.

通过分析复式断面流量模(K)与高程(Z)的函数关系及其曲线特性,探讨运用数学方法和数值分析确定断面主边槽的分界点,从而实现应用计算机划分断面主边槽

TheKeyLaboratoryofWaterandSedimentSciences,MinistryofEducation ,China ; 3 .DepartmentofHydraulicEngineering ,TsinghuaUniversity ,Beijing 10 0 0 84China) Abstract:Thedistributionofwindvelocitieswithheightduringsaltationisdiscussedatlengthbasedonboththe datafromauthors’windtunnelexperiments ,inwhichtherelativecompletemeasurementsoftheparametersrelated tothewindvelocitiesweremade ,andexistingdatafromothers’experiments.Theoreticalanalysesweremadefor thefluidshearstresswithinthesaltationlayer,whichwasfounddependingonthethresholdshearvelocity,thevari...

TheKeyLaboratoryofWaterandSedimentSciences,MinistryofEducation ,China ; 3 .DepartmentofHydraulicEngineering ,TsinghuaUniversity ,Beijing 10 0 0 84China) Abstract:Thedistributionofwindvelocitieswithheightduringsaltationisdiscussedatlengthbasedonboththe datafromauthors’windtunnelexperiments ,inwhichtherelativecompletemeasurementsoftheparametersrelated tothewindvelocitiesweremade ,andexistingdatafromothers’experiments.Theoreticalanalysesweremadefor thefluidshearstresswithinthesaltationlayer,whichwasfounddependingonthethresholdshearvelocity,thevari ationsofverticalvelocityofgrainswithheight,andtheverticaldistributionofthemassfluxofgrains.Asaresult, ananalyticalexpressionforthewindvelocityprofileduringsaltationwasdevelopedandthepredictedresultswerein goodagreementwiththeexperimentaldata .ItwasindicatedthatBagnold’sviewthatthewindvelocityprofilesfor differentwindstrengthsduringsaltationconvergetoafocusiscorrect,butthatthefocusisnotalwaystransitionfrom profileswithinthesaltationlayertoonesoutsideofthesaltationlayer.Themorereasonabletransitionwasfound , theheightofwhichscaledwith 0 .0 1 5timesofthesecondpowerofthefluidshearvelocityabovethesaltationlayer. TheequationgivenbyOwenforthewindvelocityprofileoutsidethesaltationlayerissound ,butifthecoefficient, C =0 .0 4inthedynamicroughnessformulae ,itismoreconsistentwithexperimentaldata .Foragivenfree stream velocity ,theairfrictionvelocitiesduringsaltationarelargerthantheequivalentcleanairfrictionvelocities.Airki neticenergylossduetograinmovementreachesthemaximumatsomeheightnearthebedsurfacewhiletherateof airenergylossmonotonicallydeclineswithheightabovethebed .

以测试参数较为齐全的挟沙气流风洞实验资料为基础 ,结合已有各家资料重点对近床面区挟沙气流流速垂线分布进行了系统的分析。在对近床面区沙粒跃移层内气流剪切应力分布的理论分析基础上 ,指出了该区的剪切应力由沙粒临界起动风速、沙粒垂直速度的垂线变化和输沙量垂线分布三者决定 ,并进一步导出了近床面区的挟沙气流流速垂线分布廓线方程 ,由该方程计算得到的结果与实测资料吻合很好。此外 ,研究还表明 ,Bagnold提出的不同风力条件下挟沙气流流速廓线聚焦于一点的观点基本正确 ,但这一点不宜作为跃移层内外风速廓线的分界点 ,实际的分界点高度是沙粒跃移层外气流摩阻速度平方的 0 .0 15倍 ;Owen提出的跃移层外风速廓线方程基本合理 ,但其中有效粗糙度公式中的系数C取值为 0 .0 4时更符合实测资料 ;来流速度相同的情况下 ,挟沙气流的摩阻速度大于清洁气流的摩阻速度

 
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