... Active Data Dictionary 基于活动数据字典 active data structure 有效数据结构 active data station 现役数据站 ...
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The xsd:choice data type describes a structure in which only one of its child elements can be active or selected.
choice 数据类型描述了这样一个结构，其中只有一个子元素可以是活动的或者可供选择。
Active fuzzy data model is studied based on relation data model. Following an introduction to active fuzzy database technology, the structure of active fuzzy database is analyzed.
在关系数据模型的基础上，对主动模糊数据模型进行了研究，介绍了主动模糊数据库技术，分析了主动模糊数据库的结构。
Through the observational data which was transmitted back to the ground by space telescopes, we have seen many kinds of the three-dimensional structure of the active phenomena in solar atmosphere.
通过空间卫星传回的数据资料，我们可以看到太阳活动丰富多彩的三维结构。
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