| 1. | Then we analyze the constraints of dimension in the general arrangement graph and set up related data structure
并结合客船总布置图的特点具体分析了其中的尺寸约束，且建立了相应的数据结构。 |
| 2. | Through merging the dimension parameters into the data structure , the solutions to the constraints are solved using geometry organon
通过将尺寸参数融入数据结构之中，利用几何推理法编程实现了对尺寸约束的求解。 |
| 3. | To multi - constraint problem about size , stress and displacement , the size and stress constraints are transformed into the movable size constraints
对于尺寸、应力和位移约束的多约束问题，文中把尺寸、应力约束转化为动态尺寸约束。 |
| 4. | To solving the constraint dimensions , a new strategy appending the location dimension beforehand is applied , and the formula to solving the constraint dimensions is established
给出了特征位约束的判别算法，最后求得组合体的尺寸约束解。 |
| 5. | The classification - based acquisition technique of engineering semantics is presented . on the base of engineering semantics classification , the contribution of different kind of semantics and the relationships among them in edi are analyzed
在工程语义分类基础上，探讨了三类工程语义在基于工程图样的产品信息获取中的作用和关系，即表达方式语义是前提，投影关系语义是核心，尺寸约束语义是引导。 |
| 6. | The reason is that only geometry information of the graph is used to draw in this way . in fact , there is much other parameter information with engineering meanings in the graph , such as relations of geometry topology and constraints of dimension
其原因是采用绘图软件直接绘制时，仅仅利用了图形的几何信息，而在实际工作中，图形还包括一些具有实际工程意义的几何拓扑关系和尺寸约束等参数信息。 |
| 7. | Because the technique establishes the connection between the 2d combined factors and their homologues 3d combined relationships , the search space could be limited and the recognition shape could be extended . the strategy for product information acquisition is designed , including the
设计了产品信息获取的策略，包括基于尺寸约束信息引导的图形搜索策略、以目标为驱动的控制策略、以及基于多种约束信息的合成策略。 |
| 8. | The constituents of 2d parametric graphics and the associated relations of them are discussed ; the key techniques , the building and the driving of the structural constraint and the size constraint model are studied ; a efficient method is provided for the serialized design in mining cad
讨论了参数化二维图形的组成及其关联关系，研究了图形结构约束模型和尺寸约束模型的建立方法和驱动求解等关键技术，为开采设计cad中系列化产品设计提供了一种有效手段。 |
| 9. | Effective approaches are put forward which to define hierarchical levels of design parameters , classify along with dynamic and intelligent solve various engineering design constraints , and parameters information database , dimension constraint functions database and knowledge constraint database are establishes
文中对设计参数的层次化定义、约束的分类及其动态化和智能化处理提出了有效的解决方案，并建立了参数信息数据库、尺寸约束函数库和知识约束库。 |
| 10. | The results by exemplification expatiate that this method can not only be used directly to work out the optimum structural design with discrete variables to constraints stress and cross - section area , but also can deal with the discrete structural optimization featured with multi - loading , multi - constraints and multi - variables
算例结果表明，该方法能直接计算具有应力约束和截面尺寸约束的离散变量结构优化问题，也能处理同时具有稳定约束和位移约束的多工况、多约束、多变量的离散变量结构优化设计问题。 |
