Constructivism holds that knowledge is not passively received but active construction by the cognitive subject based on the prior knowledge.
建构主义认为：知识并非被动地接受，而是由认知主体在原有知识基础上主动建构的。
2
The thesis is focusing on domain knowledge handling based on conceptual network, concentrating on conceptual network construction and calculation.
本文研究内容主要是基于概念网的领域知识组织、概念网构建，以及基于概念网的概念计算等。
3
The knowledge representation facing design and involved in the product quick design, knowledge-based technique for product model construction, modularization design technique and pr.