本文的主要工作是面向农业领域的本体知识协同建构和语义信息检索。
In this paper, the main work focuses on the collaborative construction of agricultural ontology and sematic retrieval for agricultural resources.
文章介绍了协同学习的基本概念，阐述了建构主义学习理论对协同学习的理论指导。
The article introduces the conception of cooperation learning, develops that the constructivism learning theory has guidance to cooperative learning.
围绕虚拟设计的原理和方法，从协同设计机制、协同设计的管理、虚拟设计表达三个方面分析它建构中面临的问题。
The problem is analyzed from three points of view: the mechanism of cooperative design, the management of cooperative design, the representation pattern of virtual design.
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