克服了传统数字电路倍增设备只能点对(多)点传输的局限，可方便的组成EDCM网。
The limitation of traditional DCME (only point to (multi -) point transmission) is overcome by the new one. EDCM network can be easily formed.
提出了可交换数字电路倍增的概念，并提出了在电路交换网上实现可交换数字电路倍增（ED CM）的技术。
The concept of exchangeable digital circuit multiplication (EDCM) is proposed. The implementation technique of EDCM is put forward.
提出了可交换数字电路倍增的概念，并提出了在电路交换网上实现可交换数字电路倍增（ED CM）的技术。
The concept of exchangeable digital circuit multiplication (EDCM) is proposed. The implementation technique of EDCM is put forward.
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