在快速眼动睡眠周期之间，我们还有非快速眼动睡眠，包括深度睡眠和慢波期睡眠。
In between cycles of REM sleep, we have non-REM sleep, which includes deep or 'slow-wave' sleep.
应用小波分析研究了外循环反应器浓度波这类非平稳拟周期信号的特征。
The characteristic of the concentration wave in the RTD of out-circular reactor, which is a nonstationary quasi-periodic signal, has been investigated with wavelet analysis.
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