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1)  two-dimensional harmonic signal
二维谐波信号
2)  Second harmonic signal
二次谐波信号
1.
The gas concentration calculated from second harmonic signal would be affected by the variety of linewidth induced by different gas parameters during the measurement by wavelength modulation absorption spectrometry using tunable diode laser.
在利用可调谐激光调制吸收光谱技术进行测量时,气体参量改变将导致线宽变化,从而影响二次谐波信号峰值的大小。
3)  harmonic signal
谐波信号
1.
Wavelet spectrum and its ability to characterize harmonic signals;
小波谱及其对谐波信号的刻画能力
2.
Closed-loop algorithm for the detection and estimation of harmonic signals and its application
谐波信号的闭环检测和估计算法及其应用
3.
The forward and backward united iterative prediction model(FBUIPM) for chaotic time series based on the forward and backward united prediction model(FBUPM) is proposed,and it is used to investigate the harmonic signal extraction from chaotic time series.
在混沌时间序列前后向联合预测模型的基础上,提出前后向联合迭代预测模型并将之用于混沌背景下谐波信号的提取。
4)  2-dimensional signals
二维信号
1.
Study of 2-dimensional signals time-frequency spectrum of Hilbert-Huang transform
二维信号Hilbert-Huang变换时频谱研究
5)  harmonic reference currents extraction
谐波参考信号
6)  Harmonic signal generator
谐波信号发生器
补充资料:二次谐波交流极谱法
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性质:由于法拉第电流的非线性性质,它含有基波频率外,还有频率为基波频率,n次倍的n次谐波电流;而充电电流则为线性的,只有基波频率电流。如果只测量通过电解池的高次谐波电流,则可消除充电电流成分,提高法拉第电流对充电电流之比,即信噪比二次谐波交流极谱法测量的是通过电解池的二倍于基波频率的电流。这时充电电流已消除,因而提高了测定的灵敏度。

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