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switchingtechnology
- 通信中交换的要领源于电话交换。从通信资源分配的角度来看,交换就是按照某种方式动态地分配传输线路资源的一种运作。当然,这也是一门技术,称之为交换技术。-Exchange of communication essentials from the telephone exchange. Allocation of resources from the communications point of view, the exchange is in some way in accordance wit