名词
中文翻译：时间频率谱
同义词：
['time-frequency spectrum', 'temporal spectrum例句：1. The spectral analysis of the signal revealed that it was composed of multiple frequencies.（信号的频谱分析显示它由多个频率组成。）']
例句：
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1. The spectral analysis of the signal revealed that it was composed of multiple frequencies.
信号的频谱分析显示它由多个频率组成。
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2. The researchers used a time-frequency spectrum to identify the most significant features in the data.
研究人员使用时间-频率谱来识别数据中最重要的特征。
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3. In this study, we employed a time-frequency spectrum to analyze the dynamics of the system over time.
在这项研究中，我们使用了时间-频率谱来分析系统随时间的变化动态。