First, the simplified dynamics and kinematics model of attack helicopter air-combat are created, and the specific method on simplification of the model is given.
首先建立了简化的武装直升机空战动力学和运动学模型，阐明了模型简化的具体方法；
A simple and feasible case model described by structured data is proposed. The calculation of case similarity is discussed and the specific method of case retrieve is introduced.
建立了简洁可行的用结构化数据表示的实例描述模型，分析了实例相似度的计算问题并介绍了实例检索的具体方法。
Economic analysis of the specific method is a cost-benefit analysis and normative analysis and empirical analysis.
经济分析的具体方法是成本效益分析法和规范分析与实证分析相结合的方法。
The basic ideas of PVC extension project has been introduced, and the specific method of innovation of each section in PVC production chain has been put forward.
介绍了聚氯乙烯扩建工程的基本设想，提出聚氯乙烯各工段改造的具体方法。
The basic ideas of PVC extension project has been introduced, and the specific method of innovation of each section in PVC production chain has been put forward.
介绍了聚氯乙烯扩建工程的基本设想，提出聚氯乙烯各工段改造的具体方法。
应用推荐