Based on the second development method of Pro/E，developed the Eular elements operation library and the form feature library in Pro/E environment，and achieved preliminarily the 3D local operation of the form feature model.
④ 深入分析了局部操作原理及实现机制，归纳了PRO/E二次开发方法并以其为平台，开发欧拉算子库，初步实现了三维模型的局部操作。
参考来源 - 协同设计环境下的特征建模技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
这篇论文提出了一种分布式数据库的形式化描述表示，如何将分布式数据库的全局操作变为局部操作。
The thesis suggests a kind of formalism of distributed database operations to present how to change the general operations into the local ones.
TBSCAN(4)——因为这个连接断言和NLJOIN(2)分析出的相同，并且没有其他局部断言，可以忽略该操作。
TBSCAN (4) — Since this is the same join predicate being resolved at NLJOIN (2), and there are no additional local predicates, we can ignore this operator.
对如此一个简单的操作您不必改变任何现有行为，所以您同意将其作为API局部改变。
You don't have to change any existing behavior with such a simple operation, so you agree to add it as a minor change to your API.
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