RDL allows the definition and application of relations between classes, based on correspondences between structural features.
基于结构化特性之间的通讯，RDL允许类之间的关联的定义和应用。
The paper states the relations between international tax and international trade and it also introduces the tax system features of US, France and Japan and so on.
该文论述了国际税收与国际贸易的关系，介绍了美国、法国、日本等国税制的特点，分析了导致各国税负差异的原因。
The content of the education of science history has the structural features with the corresponding relations between the content and structure due to its hierarchical dependence.
由于科学史具有层次性，因此，科学史教育的内容具有结构特点，并且内容与结构体现出一定的对应关系。
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