根据《American Heritage Stedman ' s Medical Dictionary》的定义，分类是“划分有序系统中组织的类别，以指示自然关系。”
According to the American Heritage Stedman's Medical dictionary, taxonomy is "the classification of organisms in an ordered system that indicates natural relationships." 1.
关系型数据是平面的、高度结构化、强类型化、无序的，而XML数据是有序、嵌套的、层次化的、可选类型化的，并且往往不规则且是不完全结构化的。
Relations are flat, highly structured, strongly typed, and unordered while XML data is ordered, nested, hierarchical, optionally typed and often irregular and semi-structured.
职位总体目标：在售后服务阶段保证设备和系统的良好有序运转，并与客户保持良好关系，时刻关心客户诉求，并适当发掘新的需求点。
Job Objective: Make sure Durr equipment and system run well, keep deep relationship with customers, care their demands. Meanwhile, create new sales points.
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