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public switched network; public switched telephone network PSTN | |||
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public switched network | |||
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public switching network |
公共 交换网 : 23 phrases in 9 subjects |
Agriculture | 1 |
Aviation | 2 |
Communications | 1 |
Data processing | 2 |
Electronics | 7 |
Information technology | 3 |
Space | 3 |
Technology | 2 |
Telecommunications | 2 |