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| |||
| spectrum analyzer | |||
| Fourier analyzer; wave analyzer | |||
| frequency spectrum analyser; frequency spectrum analyzer | |||
| spectrum analysor | |||
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频谱分析器 : 12 phrases in 5 subjects |
| Air defense | 2 |
| Business | 1 |
| Electronics | 2 |
| Oil / petroleum | 1 |
| Technology | 6 |
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