ETF：能量、时间、频率
“能量、时间、频率”（英文为Energy, Time, Frequency）在学术文献及物理学领域常被缩写为ETF，以简化书写与日常使用。这种缩写不仅提升了术语的表达效率，还有助于在科研讨论和教材编写中保持表述的简洁性和专业性。
Energy, Time, Frequency具体释义
Energy, Time, Frequency的英文发音
例句
- Energy Time Frequency Distribution Based on Power Line Channel Effect and Its Application in Energy Assignment
- 基于电力线信道作用的能量时频分布及其能量分配
- Based on the local characteristics of signals, a local wave method ( LWM ) can be employed to obtain the instantaneous frequency of signals and the Hilbert time frequency spectrum composed of an energy time frequency three dimensional distribution.
- 局域波法是基于信号局部特征，通过该方法可得到信号的瞬时频率和构成能量-时间-频率三维分布的Hilbert时频谱。
- The method of time frequency domain spherical divergency and absorption compensation can be used to compensate the excitation energy in time and frequency domain, so we can reach the aims of amplitude preservation and enhancing seismic resolution.
- 时频域近地表和大地吸收衰减补偿方法实现了同时在时间、频率两个域内对近地表和大地吸收衰减进行补偿，达到相对保持振幅和提高分辨率的目的；
- The results show that HHT method can be used to process structural earthquake records for obtaining the energy concentrative time and frequency area.
- 研究结果表明，对结构地震反应记录而言，可以使用HHT方法分析得到记录能量集中分布的频段与时间范围；
- Moreover, the distribution of space interferences ' energy with time and frequency can also be obtained for monitoring HF channel of interferences.
- 此外，被动接收模式也可获得空间干扰信号能量随时间和频率的分布，以实时监测短波段干扰情况。
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