该造型的特点一是基于特征，其几何信息和工艺信息主要从制造要求出发；
The modelling is based on part feature, its geometry and process information are from the manufacturing requirement.
因此，基于细胞元模型的语义特征造型已成为当今CAID系统的主要研究的方向之一。
So, the semantic feature modeling technique based on cellular model has become very important in most CAID systems.
对特征造型方法和基于约束的设计进行了讨论。
The feature modeling and the design based on constraint were analyzed.
本文具体讨论了基于特征造型的自由曲面特征设计与约束求解问题。
This paper mainly discusses the freeform feature design based on the feature modeling and its constraint solving.
在六元组的角色结构上，建立了汽车造型情境的风格情境、品牌情境和类型情境三种情境模式，实现特征线的知识表征。研究提出了一种基于特征的汽车造型知识获取的理论与方法。
Trough six elements structure of the role and three automobile form scenario modes, which are style scenario, brand scenario and type scenario, the automobile form knowledge is represented.
为了建立机械零件的信息模型，本文介绍一种基于商品化CAD软件系统的特征造型系统。
This paper presents the feature modeling system based on a current business CAD software to build a full information of mechanical components.
基于混合实体造型HBCR技术，通过提取钣金冲压件形状特征模型，实现了基于特征的钣金模型设计。
Based on this HBCR, the shape features are extracted from solid model for sheet metal punching part to realize the "feature-based" modeling design.
本系统共分为三个模块，即特征造型模块、基于CBR的模具分型面设计实现模块和分型面设计帮助信息模块。
The system is composed of the module of feature modeling, realization module of CBR-based mold parting surface design and help information module of the parting surface design.
拓扑元素的命名和辨识是基于历史的参数化特征造型中的一个关键问题，其实质是维护设计过程中隐含的设计意图。
One of the fundamental issues with history-based parametric feature modeling is how to effectively name and identify referenced topological entities.
在已有研究的基础上，设计了一个基于标识的复制式协同特征造型系统。
Based on the previous research work, a topological identifier based replicated collaborative feature modeling system is designed.
介绍了基于特征的冲压零件智能造型系统ams。
A featured-based intelligent modeling system of blanking part-ams has been introduced in this paper.
目前网络CAD系统的核心造型系统大多是基于特征的参数化造型系统。
Currently, feature is employed by most of the parametric solid modeling systems which are the kernel modeling system of the network-centric CAD systems.
本文论述了基于特征的三维实体造型与分析系统之间的模型及数据自动转换的问题。
The study of automatic exchange between modeling and data of 3-D solid modeling based on feature and dynamics system.
本文提出以特征线为基础来研究汽车造型，借鉴FBS理论对汽车特征 线的属性进行表达，并简要探讨如何基于特征 线的 属性进一步展开汽车造型研究。
Based on the FBS theory, this paper presents a study on vehicle styling by capturing and indexing the feature line and its attributes of the vehicle.
基于特征的参数化几何造型是一种新型、快速的造型方法。
Parametric feature-based modelling is a new, fast modelling technique.
然后提出了基于特征的实时协同设计方法，并重点对作为网络间协同信息的三维造型特征的数据结构和基于它的协同设计方式进行了研究。
After that the method of real-time cooperative design based on features has been put forward, and a study has been carried out emphatically on the data structure of 3d modeling features...
然后提出了基于特征的实时协同设计方法，并重点对作为网络间协同信息的三维造型特征的数据结构和基于它的协同设计方式进行了研究。
After that the method of real-time cooperative design based on features has been put forward, and a study has been carried out emphatically on the data structure of 3d modeling features...
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