睡眠专家也指出人昼夜周期中，即使是很小的变动，也会随着周期的不断推移而扩大。
Also, sleep scientists know that even a small variation in people's circadian cycles gets amplified by such factors as when in their cycle light strikes the eye.
核桃含有褪黑激素——一种能调节昼夜周期节律的神经激素，能帮助你得到应对白天活动所需的休息。
Walnuts are rich in melatonin, a neurohormone which regulates the circadian rhythm of your sleep-wake cycle and helps you to get the rest you need to face the day.
这种以近似于——但不完全是——一天为周期的节律，叫做昼夜节律。
Such a rhythm whose period is approximately—but not exactly—a day is called circadian.
所有的这些周期被人们统称为昼夜节律，一般以24小时一昼夜为一个循环。
Collectively, these cycles are known as circadian rhythms and are generally tied to the 24-hour day-night cycle.
几乎自然界中所有的物种，从单细胞生物到哺乳动物(包括人类)，都具有一种日常活动周期，称为昼夜节律。
Virtually all species in nature, from single-cell organisms to mammals, including humans, exhibit a daily cycle of activity called circadian rhythm.
缺乏光照有可能破坏你的醒睡周期和昼夜节律，还可能改变一种叫血清素的脑化学物质进而影响情绪。
Lack of light may upset your sleep-wake cycle and other circadian rhythms. And it may cause problems with a brain chemical called serotonin that affects mood.
研究者表明，这是由于我们的自然睡眠-觉醒周期或者昼夜节律的影响。
This could be due to the effects of our natural sleep-wake cycle, or circadian rhythm, the researchers suggest.
当我们的生物钟周期与外部的昼夜交替周期不一致时，我们就有倒时差的感觉。
Jet lag happens when your circadian rhythm is running on a different day-night cycle than the day-night cycle of the outside world.
不像在它之前的射电望远镜，只能在有限的周期内扫描天空，艾伦望远镜阵列可以昼夜不停地探测宇宙。
Unlike previously existing radio telescopes, which scan the sky for limited periods, the Allen telescope Array probed the universe round the clock.
就像日有昼夜、季有冬夏一样，经济也是存在景气周期的。
Just like the circulated days and nights, and the repeated winters and summers, economy has its own boom-recession circle.
人类的生活周期是24小时，这个周期的形成不只是因为有白天和黑夜，它还与人脑内主要的计时器昼夜节律钟有关。
Humans are pegged to a 24-hour cycle. We're locked into it not just by day and night-there's the master timepiece in the brain called the circadian clock.
我们如何将我们的云应用到大气中，并实现我们一天昼夜的时间周期。
And how we integrate our clouds into atmosphere and our time of day cycle.
在20世纪初，科学家们发现，动物也有昼夜节律：即使没有如光线之类的外部变化的提示，动物也能保持一个24小时的活动周期。
In the early 1900s scientists found that animals have circadian rhythms, too: they also are capable of maintaining a 24-hour-long activity pattern in the absence of external cues such as light.
早些年，约翰斯·霍普金斯大学的一位科学家发现，人类在全天24小时的昼夜节律周期中的生物功能改变可以被预测。
Some years ago, a Johns Hopkins scientist discovered that human beings experience predictable changes in biological functioning throughout the 24-hour (circadian) cycle of the day.
生物节律：由生物钟控制的周期性的生理上的或行为上的变化。昼夜节律就是一个很好的例子。
Biorhythm a periodic physiological or behavioral change that is controlled by a biological clock. Circadian rhythms are an example.
在不考虑其它因素影响的条件下，细纱断头率在一昼夜内存在着周期性变化的现象。
Neglecting the influence of other interfering factors. it is found that the end breakage rate varies periodically round the clock.
在人工恒定环境下，活体生物的昼夜节律生物钟通常运行的时间周期在22到26小时不等。
Circadian clocks in living creatures usually operate on a time cycle that varies between 22 and 26 hours in artificially constant environments.
稚贝足丝的分泌，具有明显的日周期性变化，昼夜差异极显著。
The secrete of young shellfish foot-thread has the obvious sun periodicity change, the difference of its day and night is marked.
褪黑素(MT)由松果腺分泌，具有明显的生物节律性，包括昼夜节律、季节节律和生命周期节律。
Melatonin (MT) is secreted by the pineal gland and has obvious biological rhythmicity including circadian, season rhythm and life rhythm (aging clock).
就像日有昼夜、季有冬夏一样，经济也是存在景气周期的。
Economy travels in a cycle of boom and bust, which resembles the cycle of night and day and the cycle of seasons.
这些阶段被称为“次昼夜的节拍周期。
这些阶段被称为“次昼夜的节拍周期。
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