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分界点
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  “分界点”译为未确定词的双语例句
    A Parallel Geometric Correction Algorithm Based on Dynamic Division-Point Computing
    基于动态分界点计算的并行几何校正算法
短句来源
    To Obtain Boundary Points of Solid and Dash Line on Joint Lines on a Surface with Geometrical Change Method
    用几何变换法求曲面相贯线的虚实分界点
短句来源
    A computer program for receiver operating characteristic curve analysis and diagnostic cut-off choice
    ROC曲线分析及诊断分界点确定程序
短句来源
    3) The contour is segmented by feature points; 4) The contour is globally constructed through determining the segments types(line or circle) and the constraints with the neighbor segments?
    3)以特征点为分界点对轮廓数据点进行分段:4)判断分段数据点确定的曲线类型和各分段曲线之间的约束关系,进行基于约束的分段平面轮廓曲线整体拟合。
短句来源
    Firstly, the method of Fuzzy Enhancement of Underwater Image based on Relative Entropy is proposed. It well deals with the problem of defining the cross point using the combination of the theory of image segmentation and relative entropy.
    首先在图像增强上采用了基于相对熵的水下图像模糊增强方法,针对传统模糊增强的分界点难以确定的问题,利用图像分割原理结合相对熵方法很好地解决了这个问题。
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  division point
Each division point is uniformly distributed on the interval and conditionally independent of the others.
      
To this end, we selected a number of representative Proteobacteria to see if we could find a division point.
      
Here we adopt genetic algorithm to select the optimal division point which satisfied two criteria listed above.
      
Manual shutoff valves shall be provided at each major division point in the distribution system.
      
The division point is searched by the genetic algorithm to guarantee the optimization of the planned trajectories.
      
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  threshold point
A Relative Operating Characteristic (ROC) analaysis was used to determine the optimal threshold point for case definition and to compare the performance of these two questionnaires.
      
Based on the results, I propose that there is a threshold point in the aciniform glands, and the amount of silk reserve in the glands relative to that threshold determines the size of decorations.
      
Passing from dissociated to molecular-dispersed associated and then to colloidal-dispersed casein result in a decrease of the total concentration in the threshold point (C*t) in accordance to C*t∝Mw0.27, and in increasing asymmetry of phase diagrams.
      
The threshold point of phase transition (both W I→W IV and W IV→W II transitions) has been found to be a function of the configuration of added nonionic surfactant, nature of the polar solvent and oil.
      
The first term is a constant that holds for any given duration; the second is a 'traditional' transition-rate function with the threshold as its time origin, and it is added after a certain threshold point.
      
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An analytical method is used to illuminate the characteristics of the projection of the intersecting lines of two double-curved surfaces possessing a common symmetric plane on the common symmetric plane. As a result, a theorem is established that the projection should be a quadratic curve. The construction of the intersecting line is approached both graphically and numerically, which has led to a new method——analytical graphic method. In the light of the kindred correspondency principle, the author has been...

An analytical method is used to illuminate the characteristics of the projection of the intersecting lines of two double-curved surfaces possessing a common symmetric plane on the common symmetric plane. As a result, a theorem is established that the projection should be a quadratic curve. The construction of the intersecting line is approached both graphically and numerically, which has led to a new method——analytical graphic method. In the light of the kindred correspondency principle, the author has been able to construct the special points of obliquely-intersecting axes, which has so far not been solved by either the auxiliary planar method or the auxiliary spheric method. These special points include the limiting points that will affect the precision of projection of intersecting lines (e.g. the rightmost point in the attached figure), and the top point of the quadratic curve and the boundary points of visibility of the intersecting lines.

本文以解析形式,对具有公共对称平面的两二次回转曲面的相贯线,在其公共对称平面上的投影性质进行了初步探讨,得出投影为二次曲线的定理;并以形数结合,研讨了相贯线的求作问题,提出了新的图解方法——解析作图法。文中还应用亲似对应原理,解决了用辅助平面法和辅助球面法都不曾解决的斜交特殊点的求作。这些特殊点包括:明显影响相贯线投影精确性的极限点(如文中的最右点),二次曲线的顶点,以及相贯线可见性分界点等。

The authors have derived a prametric equation of the contour curve by the graphic method and through the analysis of its na- ture on the orthographic axonometric projection of a torus.In this paper a geometrical condition leading to the tip point and a dis- criminant is given,and the orientation of the tip point and dashed and real points of division is supplied.In addition,it is mathe- matically proved that there exists a practical possibility of drawing the orthographic axonometric projection of a torus with...

The authors have derived a prametric equation of the contour curve by the graphic method and through the analysis of its na- ture on the orthographic axonometric projection of a torus.In this paper a geometrical condition leading to the tip point and a dis- criminant is given,and the orientation of the tip point and dashed and real points of division is supplied.In addition,it is mathe- matically proved that there exists a practical possibility of drawing the orthographic axonometric projection of a torus with a computer.

本文运用图解法,在对圆环面正轴测投影的曲线性质进行投影分析的基础上,导出了圆环面正轴测投影外形线的参数方程;给出了产生尖点的几何条件和判别式;解决了尖点和虚实线分界点的定位问题.为圆环面正轴测投影的计算机绘图提供了可靠的数学依据.

The scope of its application is pointed out. And here provides a new way to obtain them correctly.

本文提出用几何变换法求曲面相贯线中的虚实分界点,并指出了它的应用范围,采用该方法可准确地求出虚实分界点

 
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