This term is synonymous with the term main station or Direct Exchange Line (DEL) which are commonly used in telecommunication documents.
这个术语与通信文献中常见的主站或直拨交换线(DEL)是同义的。
This term is synonymous with the term main station or Direct Exchange Line (DEL) which are commonly used in telecommunication documents.
这个术语与通信文献中常见的主站或直拨交换线(DEL)是同义的。
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