网格细分是一种离散造型方法，可以从数字化仪等设备直接获得数据。
Subdivision is one of the discrete modeling methods that can achieve data from the devices such as digitizer.
细分方法是一种新的离散造型技术，细分曲面通过定义控制网格的细分规则来表示造型曲面。
Subdivision is a new method of discrete modeling. By defining the refinement rules of control meshes, subdivision surface can be considered as a method of surface modeling.
样条方法是当前自由曲线曲面造型最为常用的方法，动态规划为解决离散最优化问题的有效手段。
B-spline is the most popular method to present free-form curve and surface, and DP algorithm is the effective approach for solving discrete optimization problems.
通过对几种常用的CAD造型方法的比较，对常用而复杂的喷管离散点型轮廓段的拟合插值采用三次参数样条曲线来完成。
After comparing several common CAD modeling methods, the cubic parameter-spline curve is used to approach and interpolate discrete contour of usual and complicated rocket jet.
空气冲击湿砂造型过程有着本身的特点：快速冲击，离散的材料体系，材料非线性和几何大变形并存，是一个非常复杂的力学过程。
The pneumatic moulding is a very complex mechanical process with the features of fast impact, discrete materials, combined geometrical and material nonlinearity.
细分曲面是基于网格的离散曲面造型新技术，它通过定义控制网格和细分规则来表示造型曲面。
Subdivision surface is a new geometric modeling technology of discrete surface based on mesh. It can express modeling surface through control mesh and subdivision rules.
根据形体建模中综合代数法与离散法的优点，提出了DA法，兼顾了精确造型的可能性和运动仿真的实时性。
Synthesizing the Discrete Algorithm and Algebra Algorithm, the writer put forward DA algorithm to promise the possibility of exact modeling and real time animation simulating.
本文主要介绍根据CAD造型数据计算上下模冲压顶杆的高度，并开发一台顶杆高度自动调节机械手调节离散型面模具顶杆高度。
The object of this dissertation is to calculate the height of screw mandrils from CAD data and develop a mechanical hand to adjust screw mandrils' height automatically.
采用离散设计方法和UG软件的点、线、面造型功能，实现鞋楦模型的建立和修改；
The realization method of shoe-last CAD/CAM system based on Unigraphics (UG) software was being studied.
采用离散设计方法和UG软件的点、线、面造型功能，实现鞋楦模型的建立和修改；
The realization method of shoe-last CAD/CAM system based on Unigraphics (UG) software was being studied.
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