... 网络规划模拟工具: Network Planning Simulation Tool 骨干层: Backbone layer 汇聚层: Convergence layer ...
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骨干层（backbone level） 在尿域网核心中还接在集线器/交换机乊间的链路。返些交换机到 终端用户乊间没有链路，它仧叧是还接到其他的集线器/交换机。
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少数民族高层次骨干人才计划 projects for the cultivation of high-level talents from ethnic minority groups
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So the backbone layer, access layer and convergence layer are completely separated. the issue of efficiency of line slot utilization is resolved and data services is added.
彻底将骨干层、汇聚层、接入层分离。 解决线路时隙利用率的问题,并加入了大量的数据业务。
参考来源 - 中国联通太原分公司SDH传输网络优化设计·2,447,543篇论文数据，部分数据来源于NoteExpress
彻底将骨干层、汇聚层、接入层分离。解决线路时隙利用率的问题，并加入了大量的数据业务。
So the backbone layer, access layer and convergence layer are completely separated. the issue of efficiency of line slot utilization is resolved and data services is added.
目前在国内的设备生产厂商中，能够生产骨干层网络交换机的厂商为数不多，所以，在骨干层网络交换机上的访问控制列表技术在国内是处于领先地位的。
Currently, only few domestic device manufacturers can produce switches for core network, so this method of utilizing access control list in core network switches is a leading technology domestically.
人力资本计量的对象是经理层和关键的技术骨干，而不是全体员工。
The object of human capital measurement is the management and key technical personnel instead of the whole staff.
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