- dtu data terminal unit
- 数据终端: data terminal
- 单元: unit; unit element; cell; lo ...
- 群终端单元: gtu grouterminal unit
- 终端单元: atu adsl termination unit adsl; htu-c hdsl termination unit-central hdsl; htu-r hdsl termination unit-remote hdsl; tu terminal unit
- 终端单元群: tug terminal unit group
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