delta rhythm

noun

1. （显示大脑活动的）δ节律
   the normal electrical activity of your brain when you are asleep

1. Your brain waves will show the large slow waves that are known as the delta rhythm.
   这时的脑电波表现为巨大的缓波，被称为δ节奏。
2. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves.
   delta节奏消失，并被脑电波的运动图形取代。
3. Daqing oilfield has entered high water cut stage, with the severe heterogeneity of its river delta facies and normal rhythm thick layer, the water flooding development effect is poor.
   大庆油田已进入高含水期，河流三角洲相正韵律厚油层存在着严重的非均质性，注水开发效果较差。
4. Residual oil distribution and reconciliation for delta front rhythm zone in extra high water cut stage
   三角洲前缘韵律层特高含水期剩余油分布及调整

noun

1. the normal brainwave in the encephalogram of a person in deep dreamless sleep

   Synonym:    delta wave