图4显示了数据库实体模型。
研究人员很多年前就知道实体模型是不完善的。
Researchers have known for years that their models of reality are incomplete.
凸轮三维实体模型自动生成模块。
同时，工程部门制作实体模型的外壳。
At the same time, the engineering department made shells of the solid models.
实现了交互式动态更改三维实体模型。
Realized the mutual rectification of the three-dimension models.
描述零件复杂表面要用表面或实体模型。
Complex surfaces must be represented using either the surface or solid modeling technique.
我有实体模型几乎完成。
建立三维实体模型。
在这两种情况下，如果可用，将对服务模型和实体模型进行分析。
In both cases the service model and entity models, where available, are analyzed.
方法采用有限元建模技术对CAD实体模型切分模块。
Methods The CAD model is divided into parts through finite element modelling technique.
他们用近的实体模型和车辆进行卸货，检索和生存的任务。
They use near-scale mockup vehicles and conduct off-loading, retrieval and survival missions.
解决了三维实体模型到有限元模型的转化以及模型同步更新的问题。
Find a solution to convert solid model into finite element model and update model synchronize.
在时空数据库中，地理实体模型包括地理对象空间信息和时态信息。
In spatiotemporal database, geographic entity model includes spatial and temporal information of geographic object.
采用实体联系模型方法建立了软件开发过程风险各部件的实体模型；
The entity model of components of software development risk is created with the means of entity relation.
在分析实体模型技术在桥梁设计领域的应用现状和存在问题的基础上。
The present applied condition and problems of solid model technique in the field of bridge design was analyzed.
雕塑实体模型通过裁剪曲面片和半边数据结构来表达几何和拓扑信息。
The topology and geometry of solid is represented by trimmed curve surface and half-edge data structure.
以红外窗口为例，对常规平面设计方法和UG实体模型方法进行对比。
The comparison between conventional design and solid modeling by UG is made by an example of IR window.
实体模型：一种通常是建筑物的全尺寸模型，用作陈列，研究或试验。
A usually full-sized scale model of a structure, used for demonstration, study, or testing.
研究了基于实体模型的粗加工的两种方式：外形粗加工和等高面粗加工。
Two fashions of rough machining based on solid models are researched: profile rough machining, iso-height plane rough machining.
查看您的实体模型并问自己多个用户同时操作相同的实体是常见的、少见还是不可能的。
Look at your entity model and ask whether it is common, rare, or impossible for more than one user to act on the same entity at once.
前言： 目的：研究快速成形技术制作骨盆镜像实体模型的可行性和准确性。
Objective: To study the manufacture of pelvic mirror physical model using rapid prototyping and the accuracy of the models.
我能够为图4的报告说明撰写许多页的描述，包括实体模型。该工作怎样实现？
I could have written a several page description, including mock ups, for the report specification of Figure 4. What would that work achieve?
例如，假设一组分析员用uml开发了一个简单的抽象实体模型(传统分析模型的一部分)。
For example, suppose a simple abstract entity model (part of the traditional analysis model) was developed in UML by a set of analysts.
他们根据《迷失》的剧情设计出了实体模型，看上去就像是真的远离了1987年。
They’ve put together mock-ups for a Lost point-and-click that look like they actually dropped out of 1987.
要想创建实体模型，上面这些代码足矣，它包含了将模型存储到数据库中所需的一切底层信息。
This code is all one needs to write in order to have an entity model created for him, including all underlying plumbing needed to store the model in a database.
闭路拓扑原理和欧拉公式是检验实体模型边界表示的拓扑与几何一致性的重要工具。
For inspecting topological and geometrical unanimity of a solid model, principle of closed path topology and Euler′s formula are important tools.
利用齿坯实体模型和刀具实体模型做布尔减运算，来实现模拟工件材料的去除过程；
The cutting process was performed through subtraction boolean operation of the solid model of workpiece and cutter.
利用齿坯实体模型和刀具实体模型做布尔减运算，来实现模拟工件材料的去除过程；
The cutting process was performed through subtraction boolean operation of the solid model of workpiece and cutter.
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