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pilot signal | |||
monitor signal | |||
monitoring signal; supervisory control signal | |||
supervisory signal |
监控信号 : 12 phrases in 8 subjects |
Air defense | 2 |
Aviation | 2 |
Business | 1 |
Electronics | 3 |
General | 1 |
Rail transport | 1 |
Technology | 1 |
Telecommunications | 1 |