Thus, different levels of abstraction may characterize the concept of theory.
因此？抽象的不同层次可能描述理论的概念。
The theory of five product levels is in fact a two -way dynamic product concept.
产品五层次结构理论实际上是一个双向动态的产品概念。
Thus, different levels of abstraction may characterize the concept of theory.
提出了夹具抽象信息结构层次分析理论。
Thus, different levels of abstraction may characterize the concept of theory.
提出了夹具抽象信息结构层次分析理论。
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