查询词典 case study

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

In the case of Central Asia, western study of ancient civilizations of the region is uncontested.

中东古文明的研究当然更不在话下。

This study proceeded from the environment of Taiwan newspaper market and personal career experience, focused on the producing and changing courses of newspaper consumption news, and chose the Liberty Times Weekender as a case.

中文摘要：本文从台湾报业市场环境及个人职场工作经验出发，聚焦於消费新闻的产制与变迁过程，并选定《自由时报》周末生活版作为研究个案。

In any case, people have reported seeing a humped "what-is-it" for over 30 years. For a long time the mysterious monster was considered just a joke. But things changed in 1966.Then, some photo experts of the Royal Air Force reported on their study of a film of the "monster". They said that there really is some huge objects in Loch Ness--and it's probably alive!

在相当长的一段时间里，人们只不过把尼斯湖的神秘的动物当作是一个玩笑，但是在1966年这种情况改变了，英国皇家空军研究报告表明：尼斯湖里确实有某种巨大的物体，而且这个物体可能是有生命的！

More than one slippery creature is said to be living in Loch Nessie[1][2]. In any case, people have reported seeing a humped "what-is-it" for over 30 years. For a long time the mysterious monster was considered just a joke. But things changed in 1966.Then, some photo experts of the Royal Air Force[3] reported on their study of a film of the "monster". They said that there really is some huge objects in Loch Ness--and it's probably alive!

在相当长的一段时间里，人们只不过把尼斯湖的神秘的动物当作是一个玩笑，但是在1966年这种情况改变了，英国皇家空军研究报告表明：尼斯湖里确实有某种巨大的物体，而且这个物体可能是有生命的！

More than one slippery creature is said to be living in Loch Nessie. In any case, people have reported seeing a humped "what-is-it" for over 30 years. For a long time the mysterious monster was considered just a joke. But things changed in 1966. Then, some photo experts of the Royal Air Force reported on their study of a film of the "monster". They said that there really is some huge objects in Loch Nessie — and its probably alive!

在相当长的一段时间里，人们只不过把尼斯湖的神秘动物当作是一个玩笑，但是在1966年这种情况改变了，英国皇家空军研究报告表明：尼斯湖里确实有某种巨大的物体，而且这个物体可能是有生命的！

The study also suggests white-headed leaf-monkey will prosper in case the succession keeps processive.

研究还表明，只要生境植被保持良好的向上演替，白头叶猴也必将得到有效的保护。

Aboveyou may study the case, refers to Dr. Willson's procedure.

你可以学习上面的案例，参考威尔森博士的做法。

I have faily light workload and in that case, I am able to focus more on my study.

我的工作量非常的小，因此，我能够更加的专著在我的学习上。

According to my study courses and writing papers case,I will get the bachelor's degree without any problem.

我应该是会回一趟老家，我父母都很想念我，传统的中秋节也在十一期间，我要回去和他们团圆！

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。