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According to the characteristics of the gray projection curves, a pair of maximum and minimum points are found near the central position of each gray projection curve.

照相机在靠近或远离目标景物的运动过程中，如保持聚焦中心点不变，则前后两帧图像间存在一致的缩放关系。

According to the characteristics of the gray projection curves, a pair of maximum and minimum points are found near the central position of each gray projection curve. The differences in position are calculated respectively and the scale change parameter is obtained as the ratio of both differences.

此时，可根据尺度变化下图像灰度累积投影曲线的特点，分别计算参考帧和当前帧的投影曲线上一对极大—极小值点的坐标差值，以它们的比值作为缩放系数，实现实时求取。

The vane is a technique for river bank protection,which can alter direction of velocity and eliminate observably the centrifugally induced secondary current to reduce concaved bank scour and protrude bank sediment in river curves.

导流板是一种保护冲刷河道河床的技术。它能够改变水流的流向并能显著地减少弯道水流中的次生水流，从而解决了弯道中凹岸冲刷，凸岸淤积的问题。

Results The contour of soft tissue and hard tissue and some typical curves were successfully taken, and 19 cephalometric landmarks were identified,computerized automatic recognition system of cephalometry was set up.

结果：提取了头颅定位侧位片的软组织和硬组织轮廓曲线和图像内部的某些特征曲线，在此基础上确定了19个头影测量标志点，建立了X线头影测量计算机自动识别系统。

Several graded materials that are composite of different metals and ceramal are taken for the examples, the phase velocity equation is solved by the numerical method, the dispersion curves are given. The results show that the Rayleigh waves nearb...

以不同金属与陶瓷复合而成的几种梯度材料为例，用数值方法求解了相速度方程，给出了相应的波的弥散曲线，结果表明，梯度介质半空间自由表面附近的Rayleigh波通常有两种不同的弥散形式，即正常弥散和非正常弥散

Finally, all kinds of deflection curves are given with the change of the non-dimensional variable.

论文中有些力学概念不清，如：梁左端应为"固支边界"，而不是"固有边界"等。

According to this matrix and the characteristic equation for anisotropic solids, the slowness curves for this material are obtained.

由此矩阵，根据各向异性体的声波特征方程，给出材料在有关截面内的慢度曲线。

Finally, receiver operating characteristic curves of the four index of blood lipid were used to predict the presence of carotid plaque.

最后对血脂四项指标绘制ROC曲线评价其对颈动脉斑块的预测价值。

At last, the effects of Perfectly Matched Layer on the circuits' characteristics are analyzed, and the curves of characteristic varying with the number of PML are presented.

最后讨论了FDTD方法中完全匹配层对电路特性分析的影响，给出了电路特性随PML层数变化的曲线。

In this paper,the B-spline curve is supposed as boundary curves,when they are in two paralled plane and two arbitrary plane,the condition about the control vertex of characteristic polygon when the ruled surface is developable are gained,solved the designing problem of degree and degree B-spline curve .Throughing (2,3) degree and (2,2) degree B-spline ,we haveproved the validity and utility of this method.

本文用两条B样条曲线作边界曲线，当它们位于两平行平面上和两任意平面上时，研究得到了由它们形成的直纹面为可展面时它们的特征多边形顶点满足的条件，解决了(n，n+1)次和次可展B样条曲面的设计问题，然后以(2，3)次和(2，2)次B样条曲面为构造实例，证明了该算法的正确性和实用性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。