base constituent meaning in English

基本组分

Base constituent of lubricating oils
润滑油基本组分
In this dissertation the author firstly gives a brief report on development of mobile ip and research on mobile ip , then analyses mobile ipv4 and mobile ipv6 in detail , such as function - based constituents , working process and control messages . in addition , we discuss the commons and difference between mobile ipv4 and mobile ipv6 . finally the thesis make a deep research on all kinds of invasion in mobile ip network , then author employs the " routing mechanism security " standpoint to provide a new security solution
最后深入地分析了移动ip协议在安全方面所面临的威胁与对策，并从控制移动ip路有机制安全的角度提出了一种新的移动ip协议扩展方法，对协议中的三个控制报文进行了扩展，引入了新的扩展项，使之即可已提供强的认证服务，同时又具有较高的协议效率和扩展性。