余弦曲线是周期现象的简单模型。
Cosine curve is a simple model indicating the periodic phenomenon.
同时亦讨论了间隙对周期现象的影响。
The effects of backlash on the periodic behavour of forced oscillations and self-excited oscillations are also discussed.
总之，繁荣与萧条周期现象，在某种程度上与现代世界有关。
In short, the boom - bust -cycle phenomenon is somehow linked to the modern world.
本文中我们将采用一个离散型动态模型来研究这一商业周期现象。
We study this business cycles phenomenon within a model of discrete time dynamics.
然而拉尼娜现象只是一自然周期现象，并不是最近反常天气的唯一成因。
But la Nina, which is natural and cyclical, is not the only driver behind weird weather reports lately.
厄尔尼诺这种自然周期现象在全球范围内影响着气候，今年也无不例外的受其影响。
This natural periodic event affects weather globally and another is expected this year.
总之，繁荣与萧条周期现象，在某种程度上与现代世界有关。但是，这联系是什么呢？
In short, the boom-bust-cycle phenomenon is somehow linked to the modern world. But what is the link?
通过对最佳状态的稳定性分析，论述了该系统存在倍增周期现象和混沌现象的可能性。
They also analysed the model's period-doubling phenomena and existence of chaotic character, and studied model's optimal control problems.
那么，我们目前的全球繁荣是否只是一种周期现象——是可能就要破裂的流动性过剩泡沫造成的结果？
So, is our present global prosperity just a cyclical phenomenon - the consequence of liquidity-inflated bubbles, which may be starting to burst?
这种反应属于典型的光周期现象，而不是由温度的替代作用、光合时间的改变或前期短日后效应引起的。
The respose was not caused by the effects of temperature, photosynthetic duration or pre-flowering photoperiodic after-effect but was typical photoperiodism.
迄今为止，地球轨道参数的变化是地质尺度上惟一可以精确定量计算的周期现象，可以用作地质计时的标尺。
Up to now, the Earth's orbital parameters remain the only periodicities in geology subject to precise calculations and, therefore, may provide new scales for geochronology.
气候变化及周期性的厄尔尼诺现象引起的海水变暖，已经造成了大面积的珊瑚礁在所谓的“漂白”事件中消失殆尽。
Warmer sea temperatures caused by climate change and periodic El Nio events have caused large areas of coral to be wiped out in so-called "bleaching" events.
我们需要引其他一些东西进来才能解释清楚，元素周期表中发生的这种现象。
We need to add something else in order to explain what is going on in the Periodic Table.
睡眠质量是关键。睡眠呼吸终止症——睡觉时由于呼吸的暂停而周期性苏醒的现象——与心血管病有很大关联。
However, quality of sleep is key. Sleep apnea-a condition in which you wake up periodically due to interrupted breathing-has been linked with cardiovascular disease.
报告说：虽然“商业周期”仍然存在“恶化现象”，但是情况在不断缓解。
Its report said that while there was still "deterioration in the business cycle", it was at a decreasing rate.
简言之，相对的和平稳定与战争动乱，呈周期性波动，是这个500年期间一个全球性的现象，这似乎与气温变动周期相关联。
In short, synchronous periods of relative peace and turbulence during those 500 years were a global phenomenon seemingly linked to temperature change.
图6显示周期性地出现连接时间较长的现象。
由于受热带厄尔尼诺和拉尼娜现象的周期变化，全球温度的年际变化是很大的。
There’s substantial year-to-year variability of global temperature caused by the tropical El Niño-La Niña cycle.
厄尔尼诺现象是自然气象周期的一部分，大约每三至七年发生一次，对世界气候产生一年或更长时间的影响。
It is part of a natural meteorological cycle that happens roughly every 3-7 years and affects weather worldwide for a year or more.
一些生物钟似乎是按照24小时的周期设定的，这些现象叫做生理节律。
Some inner clocks seem to be set to a timing cycle of about twenty-four hours. These are called circadian rhythms.
生物学家Leonard Hayflick和PaulMoorhead于1961年发现这个细胞老化减缓的现象，他们认为这是正常细胞生长周期中的一个普通环节。
This slowdown, first identified in 1961 by biologists Leonard Hayflick and Paul Moorhead, is a normal part of cellular life cycles.
其他对于大堡礁及其生态系统的环境压力来自径流的水质问题，伴随着大规模珊瑚白化的气候变化以及棘冠海星的周期性爆发现象。
Other environmental pressures to the reef and its ecosystem include water quality from runoff, climate change accompanied by mass coral bleaching, and cyclic outbreaks of the crown-of-thorns starfish.
在一定程度上，我们所看到的一种自然现象拉尼娜的结果。拉尼娜是一种周期性的事件，期间赤道太平洋海水的温度比平常要低。
To some extent we're seeing the results of a natural phenomenon, La Nina - a periodic event in which water in the equatorial Pacific becomes cooler than normal.
由于气候变化及周期性的厄尔尼诺现象而引起的海水变暖已经造成了大面积的珊瑚礁消失殆尽——即所谓的“漂白”现象。
Warmer sea temperatures caused by climate change and periodic El Niño events have caused large areas of coral to be wiped out in so-called "bleaching" events.
科学家们忙于填补元素周期表的空白、探索未知的原子现象(如放射性和键合)。
Boffins were busily filling in the blanks in the periodic table and probing unknown atomic phenomena (like radioactivity and bonding).
在最近的一份研究报告中，他抱怨道：“人们对利润没有敬意”因为投资者们选择把更高的利润完全看做是一个周期性的现象。
In a recent paper, he complains that "profits get no respect" because investors are choosing to view the higher profits as an entirely cyclical phenomenon.
在最近的一份研究报告中，他抱怨道：“人们对利润没有敬意”因为投资者们选择把更高的利润完全看做是一个周期性的现象。
In a recent paper, he complains that "profits get no respect" because investors are choosing to view the higher profits as an entirely cyclical phenomenon.
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