几何知识是依据几何特征属性识别的土地管理领域知识之一。
Knowledge of geometry is one of land management domain knowledge that can be identified by the geometric characteristics of attribution.
提出了将虚拟装配中的产品属性与行为信息分为产品层、特征层、几何拓扑层以及显示层。
The product attribute and behavior information in virtual assembly is stored in a hierarchy of product, feature, geometry & topology and display levels.
现有的递进网格生成算法不仅效率低，而且大多只能完成几何特征的简化，没有考虑网格模型的其它表面属性。
Current algorithms for generating progressive meshes often have a low efficiency and can only complete the simplification of the geometric characters, without considering the other surface attributes.
根据特征点的几何定义，利用轮廓线的位置信息、曲率等属性来提取特征点。
Lastly, the characteristic points can be extracted by the geometry definition of them and the position and curvature of each point on the contours.
晶粒的几何特征度量是金属性能分析的重要基础。
The geometrical characteristics analysis of grain is the important base of metallographical analysis.
因此，网格具有四个基本特征：几何特性、拓扑结构、物理属性和时变性。
Therefore a mesh has four basic characteristics: geometrical property, topological structure, physical property and time-varying property.
电阻点焊接头的焊接强度由母材和熔核的材料属性及几何特征决定。
Strength of resistance spot weld is determined by the physical attributes of weldment including material and geometric issues.
针对基于属性向量的非线性配准算法，提出用机器学习的方法寻找脑图像中各个点上的最优几何特征向量。
This paper presents a machine learning method to select best geometric features for deformable brain registration for each brain location.
本文探讨了如何直接从扫描点云中通过上述四大几何属性识别物理特征的算法。实验结果证明：逆求产品和样件在尺寸和结构上高度吻合。
The paper algorithms for determining these attributes directly from a scanned point set based on these attributes, the system validation and sample results were discussed.
地震属性是从地震数据中导出的有关地震波的几何学、运动学、动力学和统计学特征的物理量。
The seismic attributes refer to physical quantities, which are derived from seismic data and related with the geometry, kinematics, dynamics and statistics characteristic of seismic wave.
本文探讨了地理空间要素多尺度表达在几何层次、实体层次、属性层次方面的多尺度表现特征。
The hierarchical characteristics in multi-representations for geographical features were explored, namely multi-geometries hierarchy, multi-entities hierarchy and multi-attributes hierarchy.
在自由特征形状的定义中，建立数值参数和最终特征形状几何属性的映射关系。
Mapping from numerical parameters to geometry is defined in the definition of freeform feature.
在自由特征形状的定义中，建立数值参数和最终特征形状几何属性的映射关系。
Mapping from numerical parameters to geometry is defined in the definition of freeform feature.
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