此模型扩展定义了4种持久化dom节点类型，设计了一种存储混合型XML文档的方法，并依据文档的次序建立了数据聚集。
This model has defined 4 extra persistent DOM node types, designed a storing method of mixed structure XML documents and created clustered data based on XML document orders.
方法：分别用自动混合型聚醚橡胶和藻酸钾印模材料制取修复体印模207例、230例，比较印模精确性。
Methods 207 auto-mixed poly rubber impressions and 230 alginate impressions were fabricated for restorations to compare their accuracy.
在对目前计算机辅助工时定额计算中常用算法分析的基础上，提出了基于成组技术的混合型工时定额计算方法。
Through analyzing the current measurements of the time quota calculation, the time quota calculation method on the basis of Group Technology is presented.
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