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service unit |
服务 单 元 : 87 phrases in 13 subjects |
Air defense | 1 |
Artificial intelligence | 1 |
Aviation | 3 |
Computer networks | 5 |
Electronics | 35 |
Exhibitions | 2 |
General | 1 |
Information technology | 13 |
Multimedia | 3 |
Rail transport | 1 |
Space | 5 |
Technology | 7 |
Telecommunications | 10 |