Firstly this thesis proposes APA Model for the two major mechanisms of citation network, which are node aging mechanism and edge copying mechanism.
首先本文对引文网络形成的两个主要机制(节点老化机制和边复制机制)进行建模。
The profile equation of brake cam of DD680 series motor vehicles and tool path equation for processing copying cam have been obtained by using analytical theory of cam mechanism.
利用凸轮机构的分析理论，获得了加工DD680系列汽车制动凸轮的轮廓曲线方程和加工该靠模凸轮的刀具中心轨迹方程。
It is significant for improving the efficiency of emergency logistics to establish quick, agile and efficient response mechanism when we are copying with a crisis.
快速、敏捷、高效的应急物流响应机制的建立，对提高应急物流应对危机的效率具有重要的意义。
It is significant for improving the efficiency of emergency logistics to establish quick, agile and efficient response mechanism when we are copying with a crisis.
快速、敏捷、高效的应急物流响应机制的建立，对提高应急物流应对危机的效率具有重要的意义。
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