形状

By projecting 3D models into 1D smooth principal curves, equally segmentation and sampling along the length of curve are implemented to extract shape feature vectors, then one can retrieve 3D model according to the matching result of shape feature vectors of 1D manifold.

本文将三维网格模型，投影为三维的光顺主曲线；通过对主曲线沿弧长方向的均匀分割采样，提取主曲线的空间位置和姿态等形状特征；最后通过形状描述向量的比较实现了对应的三维模型检索。

Your left hand will form a lowercase b, and your right will form a d.

这样的话，你的左手将形成一个小写字母b的形状，你的右手将形成一个小写字母d的形状。

"The big planets that are now keeping those gaps are determining the geometry of the system of rings," Marengo told SPACE.com .

"对环带间隙起着保持形状作用的大型行星，也决定着环带系统的几何形状，"马伦果告诉《太空网》的记者说。

The evolving process of the separation of martensite was discussed.

正是由于这些TiNi3相颗粒的存在，严重影响TiNi形状记忆合金的性能，并可能进一步引起形状记忆合金的断裂。

In this paper, searching technology of product information based on knowledge was researched. On the aspect of cognition, we researched the relation between user\'s cognition and designer\'s cognition, explored the knowledge flow in the process of product development, set up a matching model between user\'s knowledge and designer\'s knowledge, brought forward a modeling method based on users\' cognition, and set up a measurable model of product feature; coded and decoded product form element, set up a computer aided product form design system and image evaluating system based on the result of measurement. Accordingly, the product style and product image were systematically discussed, the recognition space of product style and image was constructed, the factors that affect product style and image were put forwards and analyzed, and the relation between product image and form elements was tested by experiments. Furthermore, the product automatic recognition technologies were discussed.And then, with the media of concept model and the kernel of parameter technology, a mathematic model that describing product layout design by constraints and rules was presented. Furthermore, a product design integration system based on imagery thinking including product fonii base system based on imagery thinking, product form design system based on imagery thinking and product form intelligent design system based on space layout were set up, which tested the system and provided a new way for product innovative design.

本文以产品特征描述目标对象——产品，研究一种基于知识的产品信息检索技术，在对产品的认知方面，研究了用户认知和设计师认知之间的关系，研究了产品开发过程中的知识流传递过程，建立了用户知识和设计知识之间的匹配模型，提出了一种基于用户知识的产品建模方法，它不但提取了产品的特征，还建立了产品特征量化模型，从而实现了产品知识的量化描述；对产品造型元素进行分解和编码，利用实验量化结果构造计算机辅助产品形状设计系统和心象评价系统；使用量表分析造型元素的心象尺度，构造输入、输出系统，建立了产品设计知识库咨询系统，可以方便用户和设计师来导入或查询产品设计方案；实现了对产品造型心象的分类知识库系统，便于设计师存储或查询，辅助设计师进行产品创新设计；通过实验量化了产品造型参数和产品心象参数之间的关系，并在此基础上建立了基于心象的产品形状设计系统，为产品空间布局方案智能生成系统奠定基础；在基于知识库的基础上建立了产品空间布局方案智能生成系统，通过更改概念产品造型参数，实现了产品设计方案的智能生成，使系列化的设计工作变得十分方便；将产品的心象运用到实际设计过程中，能够引导流行趋势，创造出产品无形的设计价值。

The effects of annealing temperature and deforming temperature on the microstructure and shape memory behavior of Ti-49.8Ni shape memory alloy wires and springs were investigated by optical micrometry and tensile test.

中文摘要：用光学显微技术及拉伸试验研究了退火温度Ta和形变温度Td对Ti-49.8Ni形状记忆合金丝材及弹簧的显微组织与形状记忆行为的影响。

Based on the fundamental principles of the improved method mentioned above, multi-functional computation software package, which can be used to analyze effectively the interference effects of random flaws in plane problem, boundary problem and space problem, is compiled and a number of problems involved in the interference effects of different kinds of flaws such as random equal length through-cracks, random branched throughcracks, random unequal length through-cracks, random holes to through-cracks, unequal length edge cracks, equal length and distance multiple edge cracks, random notches with different aspect ratio, random notch to edge crack, non-coplanar surface cracks with different aspect ratio, staggered surface cracks, surface crack to embedded crack and embedded cracks near free boundary are analyzed and computed by the package.

依据上述改进法的基本原理，本文编制了能有效地分析平面问题，边界问题及空间问题的任意缺陷群相互干涉效应的多功能计算软件包。据此，本文分析计算了各类缺陷群。诸如，任意等长裂纹群。任意折裂纹群；任意不等长裂纹群，任意孔与裂纹群，不等长边裂纹群。等长等间距多裂纹群，任意形状比缺口群，任意缺口与边裂纹，非共面不同形状比表面裂纹群，交错型表面裂纹群，表面裂纹与埋藏裂纹群及自由边界附近埋藏裂纹群等的相互干涉效应问题。

Our purpose is to try to understand some long-standingproblems in light baryon which include (1) The energy level or-der between the positive- and negative- parity partner states,in particular, Roper resonance puzzle;(2)The baryon spin-orbitstructure puzzle-the absence of spin-orbit effects in baryon spec-trum;(3)The calculated amplitudes of nucleon form factors droptoo fast and the uncertainty of the multipole strength in thetransition process of rN →△.

我们的目的是试图解决以往组分夸克模型在轻重子系统的研究中存在的几个问题：(1)重子谱中正负宇称配对态的能级次序，特别是Roper共振之谜；(2)重子谱中自旋轨道看不见之谜；(3)核子形状因子随转移动量增大而下降过快及核子到其共振态光和电生过程中多极子强度和形状因子的不确定性。

As he squinted, trying to make out details in the near-darkness, he began to feel his vision was slipping sideways, somehow—the overgrown shapes, smothered in shadow, seemed to simultaneously nicker with the lineaments they had once worn.

他斜着眼睛看着，想要在这不是特别黑暗的光线中，对这些形状看得更清楚一些，而这时，他的目光却总是滑向一旁——他总是觉得，沉浸在黑暗中的那些辨认不清的形状，似乎面带着讥笑。

Axis of maximum moment of inertia = the axis of figure: because the Earth is not a perfect sphere, but is physically an oblate spheroid, the position of the axis of figure is not a precise constant, but is affected by the constant change in the earth's distribution of total mass:(ie, by ocean tides, atmospheric cond- itions, plate tectonic movements, etc.).

轴最大转动惯量=形状轴：因为地球不是完全的球形，而是一个扁球体，形状轴的位置不是精确的常量，而是受地球总质量的分配持续变化作用：（也就是，受海洋潮汐、大气环流、地质板快运动等等）。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了