前言部分阐述了正当防卫研究的理论及实践意义。
The foreword parts expound the theories and practical meaning of the study of justifiable defence.
面对顾客差异化的需求，旅行社管理理论及实践面临许多困惑。
In the face of the difference demand, the theory and practice of travel agency are puzzled.
本文主要探讨信息技术与平面解析几何教学的整合的理论及实践。
This paper main discussion information technology and plane analytic geometry teaching conformity theory and practice.
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