conformal curvature tensor

Improved close shape-preserving interpolation by circular arc;

保形闭圆弧样条插值的改进算法

A class of shape-preserving quasi-interpolations using quadratic B-spline functions;

一类保形拟插值函数与二次B-样条函数之间的关系

Shape-preserving Interpolation Using Piecewise Degree 2k Polynomials;

保形分段2k次多项式插值

By choosing approarite adjustable parameters λ_i, μ_i, ρ_i, the cubic Bzier spline curve is C2-Continuous, which proves that the cubic Bzier spline curve is shape preserving to the given tangent polygon.

此外 ,证明了该 3次Bzier样条曲线对切线多边形是保形的 ,该样条曲线有利于凸轮的计算机辅助设

The shape preserving segmentation of touching objects should be their original shape after segmentation, but watershed segmentation, geodesic reconstruction damage their shapes, and they are e.

对接触物体的保形分割应该是使分割后物体恢复原来的形态 ,鉴于流域分割、测地重建等算法在分割接触物体时 ,不但对物体形态产生破坏和受干扰因素多 ,而且对于计算接触面积大小的问题 ,以上算法也不易实现 ,为此 ,提出了条件颗粒分割方法 ,即在数学形态学开运算过程中 ,对标定区域腐蚀后 ,不再做膨胀运算 ,就直接在保形的基础上 ,对不同粒度的物体进行分割 ,而对于同粒度接触的物体 ,则先通过腐蚀后 ,再做一次特殊条件颗粒分割来得到小粒度 (条带 )部分 ,再进行复原就是目标物体的接触部位。

An interpolant scheme constructing shape preserving piecewise degree 2k+1 polynomial interpolation on data sets ｛(x i,y i)｝ n i=0 is presented.

讨论了数据点集｛（ｘｉ，ｙｉ）｝ｎｉ＝ ０ 上保形分段２ｋ ＋ １ 次多项式插值，给出构造Ｃｍ （ｍ ≤ｋ） 连续的保形分段２ｋ ＋ １ 次多项式插值的方法，并对有拐子区间上拐点的情况进行了讨论。

The paper mainly introduces the features,technical process and the application of coring with formation kept technique in the south coring borehole of SLCORE-I,and raises some problems that should be paid attention in applying this technique in Daqing Oilfield in future.

主要介绍了在松科1井南孔中保形取心技术的特点、工艺过程和应用效果,并提出了今后在大庆油田地区应用此技术时应注意的一些问题。

The influences of the content of PW and LDPE,the powder loading amount as well as the degreasing method on the shape holding in metal injection molding are investigated.

研究了石蜡(PW)和低密度聚乙烯(LDPE)的含量、粉末装载量和脱脂方法对脱脂保形性的影响。

Narrow Pulse Conformality All Directions Ion Implantation Technique;

叙述了全方位离子注入过程中,由于被处理零件与其周围离子鞘层之间厚度的增加,引起零件与鞘层之间保形性变差,导致零件表面注入剂量不均匀性;文中系统分析了注入电压、等离子体密度、脉冲宽度和脉冲频率等处理工艺参数对注入剂量不均匀性的影响,用鞘层动力学计算机数值模拟方法从理论上研究了轴承内外圈处理中工艺参数对注入剂量不均匀性的影响,并用实验方法进行了测量验证,理论研究和试验测量结果的一致性,说明所提出的窄脉冲保形全方位离子注入技术完全适用于复杂形状零件表面均匀强化处理。

A kind of UV-moisture dual curable conformal coating based of silicone and acrylate with isocyanate bridge was prepared.

合成了一种以异氰酸酯为"桥"的硅氧烷-丙烯酸酯型光-潮气双固化保形涂料。

A kind of conformal design scheme for tailpipe nozzle and inlet cowl was put forward,which not only keeps missile shape,but also realizes integral conformal design with inner contour of nozzle.

提出了一种尾喷管与进气道整流罩保形设计方案,既保持导弹外形特征不变,又与尾喷管内型面实现一体化保形设计。

Aerodynamic-stealth design of conformal fuel tank;

保形油箱的隐身与气动设计