查询词典 developable surface

The burning surface at any point recedes in the direction normal to the surface at that point, the result being a relationship between burning surface and web distance burned that depends almost entirely on the grain initial shape and restricted boundaries.

燃烧表面的任何一点消退，在正常的方向，表面上在这一点上，结果被一之间的关系燃烧表面和网络的距离，烧毁认为，几乎完全依赖于粮食初步形成和限制的界限。

After remineralization, the surface structure of samples in Chinese nutgall group and Ag（ NH3 ）2F group became compacter and steadier, with presentation of small blotch and trabs; in NaF group, there was still laeune with trablike structure on the surface of the samples; in deionized group, the surface of samples was honeycomb appearance.

再矿化后，五倍子液和氟化氨银液组表面结构更加致密，均匀，呈小斑块，条索状；氟化钠液组表面也出现条索状结构，但仍有孔隙或腔隙存在；去离子水组表面出现蜂窝状结构。

The offscreen surface is a surface that will allow you to load a bitmap from a file, create a surface of an arbitrary size, or directly from DIB section.

离屏表面的表面，让你从文件加载位图，创建一个任意大小，或直接从DIB的部分表面。

First, we extract the boundaries between two different materials by weighting with gray-level gradient,and only voxels on these boundaries participate in the generation of each image, so it drastically reduces the rendering time. Second. We think the voxels on boundaries as the mixture of different materials,so in every voxel there is a surface. We use the oriented cube-interpolation technique to get the intersection point of viewing orientation and the surface in the voxel, then compute the surface normal of the intersection point. We use the normal to shade the voxel in order to improve the image quality.

首先，采用灰度梯度加权提取出三维数据场中不同物质间的边界，根据显示的需要只对这些边界上的体元赋予相应的阻光度并进行光亮度合成计算，因而可大大减少计算量，提高显示的速度；将边界上的体元作为不同物质的混合体，采用与方向有关的三线性插值来计算视线方向与体素内等值面的交点，根据交点的法向量进行光照效应计算以提高显示图像的质量；最后用投影成像法显示最终的图像。

Within GVS, a terrain surface is represented internally as a mathematical structure and offers the user sophisticated "intersection" and "collision detection" capabilities including inquiries about height-of-surface, orientation of surface, range to intersections, information about which object instance in a scene may have been intersected, which "subobjects" have been intersected, even down to the individual user defined composition types (e.g., water, mud, metal) which have been intersected.

在GVS中，一个地形表面是作为数据结构在内部描述的，碰撞检测包含查询表面高度，表面方位，交集范围，关于场景中的哪个实体虚像应该已经被碰撞，哪个"subobjects"已经被碰撞，甚至到个别用户定义需要被碰撞的物体成分类型。

The error compensation is introduced in the interpolation algorithm to increase the interpolation point's solution precision in the cutting direction of the parametric curved surface. The reasonable simplification of the computed result of the interpolation point's parameter value is carried in the operation process by focusing on the character that curvature of slow-varying parametric curved surface changed slowly and the feature that the scanned profile of translational scanned curved surface is parallel along the scanned line.

通过引入误差补偿值以提高参数曲面在走刀方向上插补点的计算精度，针对缓变参数曲面曲率缓变和平移扫描曲面扫描轮廓沿扫描线平行的特点在运算过程中对插补点参数值的计算结果进行合理简化。

Properties of bi quadratic B spline surface are investigated by the subdivision approach, and the control mesh of bi quadratic B spline surface is constructed by employing Doo Sabin subdivision to derive the parametric representation of interpolation surface.

文中利用子分曲面理论研究双二次 B样条曲面的性质，在此基础上利用 Doo- Sabin子分模式构造插值顶点位置和法向的双二次 B样条曲面控制网格，得到插值曲面的参数表示。

Proposed surface geometric operations and the improved data structure can be applied for a general parametric surface and for representing solid bounded by other parametric surface.

所提出的曲面几何处理的算法，改进的可统一表示曲面、实体模型的数据结构亦可应用于一般的参数曲面几何处理与曲面实体模型的表示。

A new approach for the surface reconstruction with arbitrary topology by parametric patches fitting is presented, where the surface is divided into patches and each is reconstructed by a parametric surface.

提出了基于平方距离函数的曲面分片参数化重构方法，实现了任意拓扑结构模型表面的参数化重构。

Based on the purpose, it is not necessary to coat nano-CaCO〓 surface thoroughly with surface modifier; it only need passivate some activity point on nano-CaCO〓 surface.

为纳米碳酸钙的表面处理提供理论指导

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样