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signal element | |||
signalling unit | |||
signal unit |
信号单 元 : 57 phrases in 11 subjects |
Air defense | 2 |
Automobiles | 1 |
Aviation | 2 |
Business | 2 |
Construction | 1 |
Electronics | 18 |
General | 1 |
Information technology | 7 |
Space | 3 |
Technology | 8 |
Telecommunications | 12 |