function tree中文什么意思

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1. following are the main results of this thesis : 1 detailedly analyze some related schemes concerning group key management and authentication, especially logical key hierarchy ( lkh ) and one-way function tree ( oft ) . we point out the reasons that oft fails to provide forward and backward security
   本论文基于这两个方面，主要研究成果如下：对目前存在的多播组密钥管理方案进行了详细的研究分析，尤其是逻辑密钥分层(lkh)和单向函数树(oft)方案，并给出oft方案不能前向保密和后向保密的依据。
2. in order to build the function model for the mold enterprise, according to the idefo method, functions of the mold enterprise were divided from top to bottom, and the function trees such as the management function tree, the technology function tree and the manufacturing function tree were established respectively . based on those trees, the top-layer idefo function graph, o-layer idefo function graph, etc . were set up, in order to build the information model, following processes had been done : 1
   郑州大学硕士学位论文按照idefo方法，本文首先将模具企业自顶向下按递阶层次进行功能分解，划分为经营管理、工程技术分析与模具制作三方面，对这三个方面进行分析与细分后，可以分别得到其功能模型功能树图，对各功能树继续采用idefo方法，可以绘制出包括企业功能模型顶层idefo图、企业功能模型0层idefo图等各级功能模型图，从而完成系统功能模型的建立。
3. in order to build the function model for the mold enterprise, according to the idefo method, functions of the mold enterprise were divided from top to bottom, and the function trees such as the management function tree, the technology function tree and the manufacturing function tree were established respectively . based on those trees, the top-layer idefo function graph, o-layer idefo function graph, etc . were set up, in order to build the information model, following processes had been done : 1
   郑州大学硕士学位论文按照idefo方法，本文首先将模具企业自顶向下按递阶层次进行功能分解，划分为经营管理、工程技术分析与模具制作三方面，对这三个方面进行分析与细分后，可以分别得到其功能模型功能树图，对各功能树继续采用idefo方法，可以绘制出包括企业功能模型顶层idefo图、企业功能模型0层idefo图等各级功能模型图，从而完成系统功能模型的建立。
4. in order to build the function model for the mold enterprise, according to the idefo method, functions of the mold enterprise were divided from top to bottom, and the function trees such as the management function tree, the technology function tree and the manufacturing function tree were established respectively . based on those trees, the top-layer idefo function graph, o-layer idefo function graph, etc . were set up, in order to build the information model, following processes had been done : 1
   郑州大学硕士学位论文按照idefo方法，本文首先将模具企业自顶向下按递阶层次进行功能分解，划分为经营管理、工程技术分析与模具制作三方面，对这三个方面进行分析与细分后，可以分别得到其功能模型功能树图，对各功能树继续采用idefo方法，可以绘制出包括企业功能模型顶层idefo图、企业功能模型0层idefo图等各级功能模型图，从而完成系统功能模型的建立。
5. in order to build the function model for the mold enterprise, according to the idefo method, functions of the mold enterprise were divided from top to bottom, and the function trees such as the management function tree, the technology function tree and the manufacturing function tree were established respectively . based on those trees, the top-layer idefo function graph, o-layer idefo function graph, etc . were set up, in order to build the information model, following processes had been done : 1
   郑州大学硕士学位论文按照idefo方法，本文首先将模具企业自顶向下按递阶层次进行功能分解，划分为经营管理、工程技术分析与模具制作三方面，对这三个方面进行分析与细分后，可以分别得到其功能模型功能树图，对各功能树继续采用idefo方法，可以绘制出包括企业功能模型顶层idefo图、企业功能模型0层idefo图等各级功能模型图，从而完成系统功能模型的建立。