太阳在长期内也是变化的：它的热量输出在周期中有上升，也有下降，最近的趋势是下降。
The sun, is also variable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
在周期的最后，磁场的两极快速翻转。
At the end of a cycle, the magnetic field rapidly reverses its polarity.
在周期的后半段，可以尝试戒掉吸烟的习惯。
Try quitting your smoking habit during the second half of your cycle.
在周期结束的精确仓库。
给出了二元序列偶在周期相关条件下的理论界。
The periodic correlation bounds of binary sequence pairs are derived.
本文预言了在周期场作用下，弯晶沟道的混沌行为。
The chaotic behaviours of bend crystal channel under the action of periodic field was predicted.
在l上有1%的误差，在周期上有，0。5%的误差，大概是0。02秒。
Since you have a 1% error in l, you're going to have a half a percent error in your period, so that is about 0.02 seconds.
第四章研究了具任意形状裂纹复合材料平面在周期压头作用下的接触问题。
Contact problem of compound material plane with periodic cracks under periodic rigid punch action is studied in the fourth chapter.
在周期环境下，研究一类具有年龄结构种群线性动力系统的最优控制问题。
The optimal control problem of linear population dynamic system with age-structure in periodic environment was investigated.
还得到了有限离散区间上非线性微分方程在周期边值条件下的一些新结果。
We report some new results about nonlinear differential equations on a finite discrete segment with periodic boundary conditions.
本文给出了某些二阶非线性微分方程在周期外力作用下存在调和解的若干定理。
In this paper we prove some theorems on harmonic solutions of some second-order nonlinear equations under a periodic external force.
第二章研究了具任意形状裂纹的各向同性弹性半平面在周期压头作用下的接触问题。
In the second chapter contact problem of a half-plane with periodic cracks under periodic rigid punch action is studied.
本文通过对饱和尾矿砂在振动单剪仪上的排水试验，量测了试样在周期荷载下的体积变化。
This paper presents the drained test of saturated tailing sand in dynamic simple shear apparatus by measuring volume change of the sample under cyclic loading.
而景气理论则是在周期波动理论的基础上，构建景气指数来监测宏观经济受经济周期波动的影响。
In the foundation of cycle undulatory theory, the booming theory founded the booming index, using it to monitor the influence of macroscopic economy by cyclical undulation.
科学家们相信，在周期的下一个上升期，也就是在太阳活动趋于频繁时，可能会对地球表面产生冷却效应。
Scientists also believe it may also be possible that during the next upturn of the cycle, when solar activity increases, there might be a cooling effect at the Earth's surface.
在周期势阱中研究这个系统，发现相干光产生光学晶格能够使原子具有了金属中的自由离子的性质，尽管看起来截然不同。
Trapping these systems in periodic potential wells made by intersecting light beams yields optical lattices in which atoms behave as electrons in metals, albeit at a quite different scale.
另外该改进方法解决了在周期内进行的大量相关运算和条件判断问题，成功实现了计算周期内各个光纤传感器解调信号波形的相对位置。
This new way solves a great deal of correlation operation and condition judgment in a period, and finally succeeds in computing the relative position of each demodulation signal wave in a period.
研究表明，在周期注水改善开发效果中，各种力所起的作用大小不同，毛管力的作用是主要的，弹性力的作用是次要的，重力基本不起作用。
This study shows that for improving development effect in the cyclic flooding, order of roles played by various forces are: capillary force, elastic force, while gravity plays no part in it basically.
即使在没有冰川的时期，天文周期也会对地球的气候产生影响。
Astronomical cycles have an effect on Earth's climate even during periods when there is no glaciation.
这是我们的身体在一天24小时内要自然经历的完整周期。
This is the complete cycle our bodies are naturally geared to undergo within the passage of a twenty-four-hour day.
地轴的倾角也会周期性地变化，在22度到5度之间移动。
The inclination, or tilt, of Earth's axis also varies periodically, moving between 22 degrees and 5 degrees.
传统观点似乎认为，企业在延长产品生命周期和减少销售新产品的收入方面是没有动力的。
Conventional wisdom would seem to suggest that companies have no incentive to lengthen the life cycle of their products and reduce the revenue they would get from selling new goods.
某一种动物通常可以在很多天内极其精确地保持其特有的周期时间。
A particular animal typically maintains its own characteristic cycle duration with great precision for many days.
这是我们的身体在一天24小时内自然调整经历的完整周期。
This is the complete cycle that our bodies are naturally geared to undergo within the passage of a twenty-four hour day.
在地球上，人们认为，表明太阳黑子周期最可靠的迹象之一是树木的生长速度，就像树干横截面上可见的年轮一样。
On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.
在结构开发的生命周期期间，您应该怎样管理百科全书的发展版本呢？
How can you manage evolutionary versions of an Encyclopedia during the lifecycle of your architecture development?
在整个食品生产周期中，能量是一种必不可少的资源，据估计，生产一卡路里的食品平均需要7-10卡路里的投入。
Energy is an essential resource across the entire food production cycle, with estimates showing an average of 7-10 calories of input being required in the production of one calorie of food.
在整个食品生产周期中，能量是一种必不可少的资源，据估计，生产一卡路里的食品平均需要7-10卡路里的投入。
Energy is an essential resource across the entire food production cycle, with estimates showing an average of 7-10 calories of input being required in the production of one calorie of food.
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