- digital spectrometer
- 数字: figure; digit; numeral; char ...
- 频谱仪: frequency spectrograph
- 杜比数字频谱记录: dolby sr-d dolby sr digital
- 实时全数字频谱分析仪: real-time all-digital spectrum analyzer
- 实时数字频谱分析仪: real-time digital spectral analyzer; real-time digital spectrum analyzer
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