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period signal | |||
periodic signal | |||
interval signal; time-cycle signal |
周期信 号: 32 phrases in 12 subjects |
Construction | 1 |
Economy | 1 |
Electric machinery | 1 |
Electronics | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 3 |
Geophysics | 1 |
Metallurgy | 1 |
Oil / petroleum | 4 |
Project management | 1 |
Space | 2 |
Technology | 14 |