The three main divisions of history are based on period, nation, and topic.
历史学三大分支，基础是时代、国别和主题。
The effect of nonlinear binding force on period and amplitude are also analyzed.
还分析了不同开度情况下非线性约束对自振周期和振幅的影响。
Taking thirty-two Beethoven piano sonatas as examples, this paper presents a thorough investigation on period structure.
论文以贝多芬三十二首钢琴奏鸣曲为例，对“乐段结构”进行了较为深入的研究。
With the method of documentation, this article reviews and comments the traditional theory on period training and super-compensation by scholars abroad in recent years.
采用文献法研究近年来国外训练学者对传统的运动训练周期理论和超量恢复原则的反思并进行了评论。
The existing deterministic analysis methods based on period task modes are conservative, and are not suitable for soft real time systems such as multimedia systems and communication systems.
目前现有的基于周期性任务模型的确定性分析方法比较保守，不适合于多媒体、通讯等软实时系统的可调度性分析。
People look back nostalgically on the war period, simply because everyone pulled together.
人们怀旧地回忆战争时期，就因为当时大家齐心协力。
And I haven't offered it in quite a while now, so I doubt you ever studied that period on the college level.
我已经很久没教过这门课了，所以我怀疑你在大学阶段可能没有学过关于那个时期的内容。
Dust storms very probably happen on hot summer days, and it's not safe for people to travel during this period.
沙尘暴很可能发生在炎热的夏天，在这个时期人们旅行是不安全的。
To test the idea, caged night-migrating birds were placed on the floor of a planetarium during their migratory period.
为了验证这个想法，这些在夜晚迁徙的候鸟被关进笼子里，并且在它们的迁徙期间被放置在一个天文馆的地面上。
Other mechanisms would be more likely to have taken place more gradually, over an extended period, or at different times on different continents.
其他机制更可能是较为循序渐进的，在更长时间段或在不同的大陆上的不同时间发生。
It is, true, the period of his life that established his name and fortune, that swift rise from undergraduate cabaret turn to star host on both sides of the Atlantic.
这真的是他生命中建立了他的名声和财富的阶段，他迅速从本科毕业的卡巴莱歌手崛起成了大西洋两岸的明星主持人。
White said his team wanted to see whether living in greener urban areas had a lasting positive effect on people's sense of well-being or whether the effect also disappeared after a period of time.
怀特说，他的团队想知道生活在绿化较好的城市地区是否会对人们的幸福感产生持久的积极影响，还是说这种影响会在一段时间后就消失。
Examining the period 1870-1920, Keyssar concentrates on Massachusetts, where the historical materials are particularly rich, and the findings applicable to other industrial areas.
Keyssar考察了1870-1920年这段时期，重点研究了马萨诸塞州，那里的历史资料特别丰富，研究结果也适用于其他工业区。
I hope to carry on for an indeterminate period.
我希望在一段不确定的时间内这样继续下去。
We can find out how much money is spent on food in any given period.
我们可以查明在特定时间内花在食物上的钱有多少。
In fruit mature period, muskmelon had higher biomass in organic production system, but there was no significant difference on market yield in both systems.
果实成熟期，甜瓜在有机生产体系中生物量较高，但两种体系的市场产量差异不显著。
Rogers found that a chick's lateralisation depends on whether it is exposed to light before hatching from its egg—if it is kept in the dark during this period, neither hemisphere becomes dominant.
罗杰斯发现，小鸡的偏侧性取决于它在孵出蛋之前是否暴露在阳光下——如果在这段时间里保持黑暗，右脑或左脑都不会占优势。
A huge storm that collapsed part of a cliff on Israel's central coast led to the discovery of a statue dating back to the Roman period, the Israel Antiquities Authority said Tuesday.
以色列古物管理局周二表示，一场巨大的风暴摧毁了以色列中部海岸的一处悬崖，使得一尊罗马时期的雕像被发现。
This period is from one to five days, depending on the state.
这个时间段从1天到5天不等，具体取决于国家。
They may focus on a certain country or a certain time period when they begin their collections.
当他们开始收集时，他们可能会关注一个特定的国家或特定的时间段。
Since its first period on Dec. 5, Letters Alive has been widely praised.
自12月5日播出第一集以来，《见字如面》这档节目收到广泛好评。
Some 43 new reptile species were found on New Guinea during the report's ten-year period, including this giant bent-toed gecko.
在这份报告的十年间，在新几内亚发现了43种新的爬行动物，包括这种巨人弯趾壁虎。
You will have a period of time to relax and then set out on your new journey.
你将有一段时间来放松，然后开始新旅程。
"When I planted the fern and bamboo seeds, I took very good care of them. Within a short period of time, the fern quickly grew from the earth," the old man went on.
“我用心播种这株蕨类植物和竹子。在很短的时间里，这棵蕨类植物很快就从地里长出来了。”老人继续说。
During the second rainy period, the dunes were kind of chopped up at the top, full of hollows and ridges, and these hollows would've captured the rain right there on the top.
在第二次雨季，沙丘的顶部被砍伐了，到处都是凹洞和山脊，这些凹洞正好在顶部吸收了雨水。
On the whole the period of which I am writing was for me one of ecstatic excitement.
整的来说，我这一段写作的时期，对我来说是一段心醉神迷的时期。
Over that period, spending on consultancy increased by a third.
在那个时期，在咨询业务上的花费增加了三分之一。
If your log was not collected over a fixed time period, zooming in on a set time period will ensure that the total is shown only for that period.
如果在固定的时间段内没有收集日志，则放大该设置的时间段将确保只显示该时间段的总数量。
Calls to ambulance services in the first four hours of 2008 rose dramatically: in London, for example, by 16% on the same period in 2007, and by 30% on 2006.
2008年的头四个小时，打电话叫救护车的人极剧增加：与2007年同期相比增加了16％，而与2006年同期相比则增加了30％。
Calls to ambulance services in the first four hours of 2008 rose dramatically: in London, for example, by 16% on the same period in 2007, and by 30% on 2006.
2008年的头四个小时，打电话叫救护车的人极剧增加：与2007年同期相比增加了16％，而与2006年同期相比则增加了30％。
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