- dtt data transmission technique
- 数据传输: data transmission
- 技术: technology; skill; technique ...
- 传输技术: transmission technique; transmission technology
- 光传输技术: ott optical transmission technology; pa optica tansmission technoogy; pa optical tra mi ion technology; pa optical transmission technology
- 语言和数据同时传输技术: dov data over voice
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