According to the defect in the teaching of elementary chemistry, the teaching model of "thread" with the main part of material structure is advanced.
前言： 根据元素化学教学中存在的不足，提出实施以物质结构为主体的“主线式”教学模式。
Discusse STL files optimizing, how to use three-dimensional reconstruction to produce the defect organs structure of tissue engineered, provide entity model for the repair of tissues and organs.
讨论了STL文件的优化，利用三维重建技术构造组织工程的缺损器官，为组织器官的修复提供实体模型。
Based on the double bridge structure of microelectronics test pattern, the method of defect model parameter extraction is presented in this paper.
基于微电子测试双桥结构，本文给出了缺陷特征参数提取方法。
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