A longstanding and common design pattern for data modeling is the division of the data model into three parts: a conceptual model, a logical model, and a physical model.
数据建模中一种常见并被长期使用的设计模式是将数据模型分为三部分：概念模型、逻辑模型和物理模型。
George explains the Architecture Modeling process from different perspectives such as Engineering Use Models, Conceptual Model, Domain Model, Design Model and the Code Model.
George从多个视角阐述了架构建模过程，比如用例模型、概念模型、域模型、设计模型和代码模型。
Further, the paper study modular assembly design in the conceptual design step, and make assembly constraint modeling through constraint classification.
进一步研究了概念设计阶段的模块化装配设计，并在分析了装配约束分类的基础上实现装配约束建模。
On the basis of process modeling of conceptual design in virtual enterprises, the types, features, forms, and distributed situations of the knowledge needed by the process are analyzed.
在虚拟企业概念设计过程建模的基础上，分析了该过程所需知识的类型、特点、存在形式和分布情况，并在此基础上提出了虚拟企业基于知识的概念设计系统的系统框架。
On applying symbol modeling principle to product conceptual design, the limit of geometry expression is avoided, and the innovation and abstract requirement of product concept modeling is fulfilled.
将符号建模原理应用于产品概念设计，脱离了几何表达的束缚，满足了概念方案建模的创新性和抽象性要求。
This paper addresses the following techniques: product modeling in conceptual design, virtual feature generation, and some important implementation techniques of them.
本文着重研究虚拟原型技术中的两个关键问题：产品概念设计建模、虚拟特征生成及其主要实现技术。
The traditional modeling techniques are mainly focused on physical modeling and geometric representation, so it makes the conceptual design of products not obtain effective technique support.
由于传统建模技术主要集中于物理建模和几何表示方面，致使产品概念设计阶段缺乏有力的技术支持。
Feature gesture as an instance of gesture applications in conceptual design is given. Compared with the traditional modeling mode, the feature gesture is convenient.
基于手势应用的范式，给出了概念设计中特征手势建模的应用实例，通过与传统建模和交互方式的对比，验证了特征手势建模的方便性。
The GIS semantic data modeling approach has been used as a tool to design the needed conceptual model.
采用语义数据模型的方法，提出利用地理特征这一概念作为建模的基本概念。
The GIS semantic data modeling approach has been used as a tool to design the needed conceptual model.
采用语义数据模型的方法，提出利用地理特征这一概念作为建模的基本概念。
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