讯噪比 xùnzàobǐ signal-to-noise ratio Origin Definitions Defs Strokes Stroke Words Sentences Sents 讯 訊 xùn noun message (bound form) message; news; information噪 zào noun noisy (bound form) (of sound) cacophonous; noisy; jarring to the ears比 bǐ preposition ratio The relationship between two amounts showing the number of times one value contains or is contained within the other.