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air traffic control center; air traffic control center (美国、英国); air control center | |||
air traffic regulation center | |||
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Air Traffic Control Centre |
空中交通 管制中心 : 20 phrases in 6 subjects |
Air defense | 1 |
Aviation | 11 |
Electronics | 2 |
General | 3 |
Space | 2 |
United Kingdom | 1 |