| 1. | 2 ) after combining surfaces , two surface curvature is continuous
2 )两曲面之间的拼接可以达到c2连续，满足曲面建模的要求。 |
| 2. | In this paper the direct iterative surface curvature ( disc ) design method is presented for designing airfoils at transonic speeds
本论文采用直接表面曲率迭代方法( disc )进行跨声速翼型设计。 |
| 3. | This paper intends to illustrate by the calculation of concrete examples that conductors are different in their electric charge intensity although they are identical in their surface curvature
摘要通过具体实例计算表明，在静电平衡的条件下导体表面虽然曲率相同，但电荷面密度却不一定相同。 |
| 4. | Using local base surface parameterization , a parametric quadric surface approximation method is used to estimate the local surface curvature properties of scattered points based on propagating normal vector direction
首先，计算各点的邻近点集，选取合适的局部基础曲面，把邻近点集投影到相应的局部基础曲面。 |
| 5. | 4 . on the base of deep discussing about spaceborne sar operation , we present an approach to acquire the target location plane by satellite position and platform attitude , then to locate the target consistent with the earth surface curvature
论文在深入研究星载雷达实际工作状况的基础上，提出了一种由卫星位置和平台姿态获得卫星与目标所在的定位平面，再根据目标所在地面的弯曲状况以及卫星到目标的距离确定目标位置的方法。 |
| 6. | Results show that the influence of mainstream reynolds numbers on heat transfer coefficience is little and the heat transfer coefficience raise with the increase of reynolds numbers . the influence of the position of holes on heat transfer coefficience is complex and correlate with the mainstream speed and the balde surface curvature . and the influence of blowing ratio on heat transfer coefficience is more great ( especially to stator ) , and show a complex relation to mainstream reynolds number and the position of holes
实验结果表明，不同孔位出流的换热由于孔排下游表面来流速度及叶片表面曲率的不同而有不同的规律，而主流雷诺数对叶片表面特别是压力面和前缘区域的换热系数比的影响较小，吹风比对换热系数影响较大(特别是导叶) ，并且随气膜孔位置和来流雷诺数的变化而情况复杂。 |
| 7. | It can be concluded that the performance differences between the plate membrane and the hollow fiber membrane can be attribute to difference of the stresses in the membranes when they were under pressure and the difference of the strain caused in the membrane , besides the possible reason that the surface curvature difference between a plate substrate and a hollow fiber one may cause structure difference in the dense functional layer when coating . the stresses in a hollow fiber composite membrane under an outside pressure are quite different from that in a plate one in that they exert on the hollow fiber in both the radial and circular directions , and the compress strain of the hollow fiber is thus much more complex , which may cause the top layer crinkle and a decreased salt rejection
分析认为造成平板复合膜( )和中空纤维复合膜( )性能差异的主要原因，除了平板基膜与中空纤维基膜因表面曲率不同可能引起在涂覆时形成的致密功能层结构上的差异之外，由于中空纤维膜受外压时，膜内部承受的应力形式与平板膜不同，会同时在径向(膜厚度方向)和环向(膜面内方向)两个方向产生压应力，因此，所发生的形变也较为复杂，可能造成表面复合层的起皱或脱落，引起脱盐率下降。 |
| 8. | Algorithms of curvature estimation and data simplification of scattered point cloud data are studied . local surface curvature properties on scattered - point data are estimated using a parametric quadric surface approximation , and the key step is local base surface parameteration method which resolves parameteration of scattered - point data . an algorithm is presented for simplifying the scattered point cloud data based on curvature restriction
实例表明,本文算法的简化结果既较好地保留了形状特征,同时使点的分布以点云密集的强制保留区为中心,在向附近扩散的过程中逐渐变稀,避免简化后点云的局部过密或局部过稀的情况。 |
| 9. | When calculating the cost of edge collapse , we consider the influence of edge length and surface curvature . and , the position of the new vertex is selected from the veytexes of the edge collapsed , this can not only preserve the initial model shape , but also reduce the calculation of cpu and meet real - time rendering of virtual environment
在折叠边的代价估计中，均衡考虑了多边形边的长度和多边形表面曲率影响；折叠边的顶西北工业大学博士学位论文点位置从折叠边的顶点中选取，既有助于保留了初始模型的形状，又减少运算量，满足快速绘制的需求。 |
| 10. | With the phenomena of dropping flow , backflow and secondary flow effected by circulation and surface curvature , the centrifugal pump ' s inner flow is very complicated 3d flow . therefore , the centrifugal pump inner flow is one of the difficult problems both in testing research and numeric computation
离心泵叶轮的内部流动是很复杂的三维紊流流动，同时由于受旋转和叶片表面曲率的影响还拌有脱流、回流及二次流的现象，是流体工程中较难的试验研究和数值计算问题之一。 |
