And as your sleep deepens, your brain moves to longer delta waves.
随着睡眠加深脑波会变成更长的波。
If ida is flowing and you are practicing meditation, you will go to sleep and your brain will produce delta waves.
当左脉活跃时修习冥想，你会进入睡眠，同时大脑产生δ波；
It is called delta sleep because of the presence of high amplitude, low frequency delta waves that are seen to occur in the EEG.
这个阶段的脑电图以高幅低频的三角形delta波为主，所以被称为Delta睡眠。
Then you get successively deeper, II through IV, slow, irregular, high amplitude delta waves, and then once you reach stage IV you start going up again, up through stage III and II.
然后睡得越来越深，从第二到第四阶段，慢，不规则，高振幅的δ波，等你到达第四阶段，你又开始返回，第三阶段和第二阶段。
During sleep, the researchers found, alpha waves are still present—they're just drowned out by the theta and delta waves, like the din of a noisy restaurant drowns out individual conversations.
研究人员发现，α波在睡眠期间仍然存在——它们只是被θ波和δ波所掩盖了，就如同餐厅中个别的谈话被喧嚣嘈杂的声音淹没一样。
Agricultural lands have recovered quickly as the good rains in April washed away the salt deposited by the waves, and fields along the delta are now green with new paddy.
由于四月份的降雨冲走了海浪带来的盐分，农田迅速恢复了生机，三角洲一带的新稻已经染绿了农田。
Waves and currents, both wave generated and tidal, are the primary agents of erosion on the delta.
受潮汐影响产生的海浪和海流是三角洲腐蚀作用的主要营力。
Your brain will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.
大脑将处于称为德尔塔节律的最慢波频，这就是第四睡眠期。
Your brain will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.
大脑将处于称为德尔塔节律的最慢波频，这就是第四睡眠期。
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