An XML schema can define the structure, the element and attributes, their data types, value ranges, etc. that are allowed in a set of XML documents.
XML模式可以定义一组XML文档所允许的结构、元素和属性、它们的数据类型、取值范围等。
Finally, a research on the technique factors such as building materials, structure types, construction mechanism etc is carried out.
最后，对晋中地区大院建筑的建筑材料，结构类型，营造机制等技术要素做出研究。
In Xianhe oilfield, there exist many types of reservoirs, complex geologic structure, variable transversal reservoirs and highly scattered remaining oil beds, etc.
现河油区的油藏类型多、地质条件复杂、储层横向变化大、剩余油高度分散。
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