English translation for "用户交换系统"
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- customer switching system
- Similar Words：
- "用户交换机计费系统" English translation, "用户交换机计费系统,专用通话计费系统" English translation, "用户交换设备" English translation, "用户交换台" English translation, "用户交换网络" English translation, "用户交流网" English translation, "用户接点" English translation, "用户接管" English translation, "用户接口" English translation, "用户接口，用户界面" English translation
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