投影几何关系 imaging geometric relationship
The class acquisition of expression mode semantics, projection relationship semantics and dimension constraint semantics, and integration acquisition technology of tangency combined relationship, interpenetrate combined relationship and intersectedcombined relationship are emphatically introduced, which lay the foundation for further primitive recognition.
重点介绍了表达方式语义、投影关系语义和尺寸约束语义的分类获取技术，以及相切组合关系、相贯组合关系、截交组合关系语义的整合获取技术，为后续基元体信息的识别、理解和获取奠定基础。
参考来源 - 基于多粒度的产品信息获取技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
利用基本视图之间的投影关系进行视图识别。
Views are identified through the projective relationships of orthographic views.
一个命题就是一个处在对世界的投影关系中的命题符号。
And the proposition is the propositional sign in its projective relation to the world.
投影关系处理主要解决线素打断与拼接、几何元素投影关系链的建立；
The processing of projection relation mainly resolves the cutting and connecting of elements and the building of the relation list of geometry element projection.
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