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recorded signal; tracer signal | |||
register signal; write signal |
记录信号: 33 phrases in 13 subjects |
Acoustics | 1 |
Air defense | 5 |
Aviation | 5 |
Communications | 1 |
Earth sciences | 1 |
Electronics | 2 |
Geophysics | 2 |
Hydroelectric power stations | 1 |
Oil / petroleum | 1 |
Shipbuilding | 2 |
Space | 3 |
Technology | 8 |
Telecommunications | 1 |