单词	hopped the perch
释义	hopped the perch v.死
随便看	signal-to-light relation signal to low frequency interference rate signal-to-masking ratio signal to mask ratio signal-to-mask ratio signal to mean signal to meanratio signal tone signal tone detection signal-tonoise signal to noise signal-to-noise Signal-to-Noise signal-to-noise absorptivity-emissivity signal to noise and distortion signal to noise and distortion ratio signal to noise and distrotion ratio signal-to-noise characteristic signal-to-noise distribution signal-to-noise for playback signal to noise improvement factor signal-to-noise improvement factor signal-to-noise kurtosis ratio signal-to-noise measurement capability signal-to-noise performance