The attribute abstract="true" establishes that this is an abstract pattern.
属性abstract="true"表明这是一个抽象范式。
An abstract pattern is a special pattern that is treated essentially as a template.
抽象范式是一种特殊的范式，基本上被看作是一个模板。
The param elements provide a value for each parameter reference used in the abstract pattern.
param元素提供了抽象范式中每个参数引用的值。
Listing 7 is an example of an abstract pattern with some sample constraints on the general idea of an XML table structure.
清单7是一个抽象范式的例子，其中包含XML表格结构中的一些典型的约束。
This code defines a Schematron abstract pattern that covers the abstract notion of a purchase order with a unique identifier.
这段代码定义了一个Schematron抽象模式，包含带有惟一标识符的订购单的抽象概念。
The twin curved glass incised with an abstract pattern stabilizes three spaces: one internal, one external and one interspatial.
上面雕刻有抽象图案的双曲面玻璃使三个空间（内部空间，外部空间和层际空间）稳固下来。
Regardless of the syntax you choose, you trace the structure from the concrete schema patterns to the abstract pattern (as in Listing 3), where you find semantic anchors that solidify the definition.
无论选择什么语法，都可以把这种结构从具体的模式范式回溯到抽象范式（参见 清单3），从而找到确定其定义的语义锚。
Regardless of the syntax you choose, you trace the structure from the concrete schema patterns to the abstract pattern (as in Listing 3), where you find semantic anchors that solidify the definition.
无论选择什么语法，都可以把这种结构从具体的模式范式回溯到抽象范式（参见 清单3），从而找到确定其定义的语义锚。
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