Kerberos正是这样的一种身份验证协议，它通过在称为密钥分发中心(KDC)的中央存储库中存储相关信息的数据库，从而提供集中式的身份验证。
Kerberos is one such network authentication protocol that provides centralized authentication by storing the database of relevant data in a central repository known as a Key Distribution Center (KDC).
但是当环线、多个扩频电台、中央控制单元(“集中式”移动闭塞系统)等设备出现故障时，系统将无法工作在ATC模式下。
But when loops, several spread-spectrum radios and centre control unit (moving block system with 'centralized' structure) fail, the system can not be running in the ATC mode.
大联合中央空调系统采用集中式中央空调一次回风系统。
The unite central air-conditioning system adopts concentrative central air-condition in which wind circles one times.
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