检测后讯号对噪声比 signal-to-noise ratio postdetection
视讯讯号后置处理 Video Post-Processing
果以正常化后的讯号 normalized signal
滤波后之重建讯号误差 reconstruction error filtered
这种化学讯号被认为会触发动机，而且在反复后，终将会上瘾。
This chemical signal is thought to trigger motivation and, eventually with repetition, addiction.
较小行星的波振幅不大，因此科学家只能在它们围绕恒星运行数次后才能从噪音中收集到讯号。
Small planets' waves have small amplitudes, so you can pick the signal from the noise only after several orbits.
但是经过一系列检测后，杨女士发现一个异常讯号。
But a series of tests showed Ms Yang something was abnormal.
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