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The main contents is: analyzing some detection method to moving target nowadays; particular studying the principle of detection moving target in SAR; analyzing SAR imaging theory and the echo model of moving target; discussing conventional SAR imaging , the movements of target cause the changes of doppler mass center and regulable frequency, and the changes cause effect the imaging result; introducing the estimation method of doppler parameter; analyzing theory of DPCA, derivating the formula needed, and validating it's validity and practicability through simulation; advancing the improved DPCA algorithm that combine the advantage of DPCA and ATI, and validating it through computer simulation; using the revision algorithm to range ambulate based on keystone transformation, and validating it through computer simulation; discussing the compensation art of SAR imaging.

主要内容有：分析了现有的一些动目标的检测方法；详细研究了SAR动目标检测的原理；分析了SAR成像理论和运动目标的回波模型；探讨常规SAR成像时，目标运动引起的多普勒质心和调频率变化，以及这些变化对成像结果的影响；介绍了多普勒参数的估计方法；分析了DPCA原理，推导所需要的基本公式，并仿真验证其有效性和实用性；提出了结合DPCA和ATI优点的改进DPCA算法，并仿真验证；探讨了SAR成像中的运动补偿技术。通过对仿真结果的分析，本文提出的方法具有一定的指导意义和参考价值。

If we consider a space uniformly filled with masses, as, for example, our space is filled with stars, galaxies and clusters of galaxies, we must conclude that, apart from localized large curvatures near particular stars or galaxies, space should possess an overall curvature due to the combined effect of all the masses- a regular tendency to curve uniformly over large distances.

如果我们考虑一个空间，被不均匀的质量块填充着，比如说，像我们的空间，被恒星、星系、和星系团填满，我们得出这样一个结论：除了局部在特殊的恒星或星系附近曲率很大的地方外，由于所有的质量块共同作用，空间应该有一个总曲率-一个在远距离上连续而不均匀的弯曲的趋势。

Database is the new database that Baidu builds to enact a new rank law, in this database in establishing a procedure, should a lot of people discover how his website didn't appear in Baidu for some time afore not the Description part of capture website, and the website of others appears in afore-mentioned phenomena, from this we can conclude it is OK that Baidu is building new B database get test and verify, the website appeared in Baidu today's phenomenon, we should OK know Baidu has been in for next rank regulation prepares, and it is important that the next will not rank influence of regard as of label of Keywords, Description will not rank influence of regard as of label of Keywords, Description regular Baidu element, even it is met throw the helve after the hatchet, turn and should do new Description to affecting the rank of website keyword with the content of own capture, corresponding do later those who optimize is difficult will increase, and Baidu will let good website appear as far as possible searching an user at the moment, so we are the following heavy name a person for a particular job meets be website oneself content to rise!

数据库算是百度为了制定一套新的排名规律而建立的新数据库，在这个数据库的建立过程中，应该有很多人在前一段时间发现怎么自己的网站没有出现在百度不抓取网站的description部分，而别人的网站出现在上述现象，从这一点上我们可以推断百度在建立新的B数据库应该可以得到验证，网站在百度中出现了今天的现象，我们就应该可以知道百度已经在为下一个排名规则做准备，而下一个排名规则百度将不会把keywords、description标签看做影响排名重要因素，甚至它会完全放弃，转而用自己抓取的内容当做新的description影响着网站关键词的排名，相应的以后做优化的难将会加大，而百度将会尽可能让好网站呈现在搜索用户眼前，那么我们以后的重点将会是网站自身内容的提高！

The comparisons show the present model are in agreement with available theories and experiments.In particular, the model is further applied to investigate the wave reflection properties of regular waves propagating over sinusoidal topography on sloping beaches.

此外本文探讨 Booij's ramp (1983)不同坡度底床地形及欧等人(2007)沙涟试验造成反射波之反射率，结果显示於适当坡度范围内本文模式可呈现优於传统缓坡方程式计算结果并与试验结果相近。

Finally, as a generalization of the group-graded regular ring, the notion of group-graded weakly regular ring is introduced and we discuss it in a new way. In particular, an equivalent condition for the semigroup rings to be weakly regular(T-weakly regular) is given.

将群分次正则环推广到群分次弱正则环；用新的方法研究了环的弱正则性，并得到半群环的弱正则性和T-弱正则性的一个等价刻画。

The conclusions also offer the different engineering constructs corresponding references.There is some particular regularity for the mechanics condition, genetic type, and slide mechanism of the expansive soil landslides in Ankang basin area, as follows:The expansive soil landslides always represent polygenic traction slides.

通过研究，从安康盆地膨胀土滑坡产生的力学条件、成因类型、滑坡机理上的得出的特殊性规律为：安康胀土滑坡多为牵引式多次滑动；胀土滑坡的浅层性与宏观结构性；膨胀土滑坡滑床的平缓性；膨胀土滑坡具有时间性和成群分布性；膨胀土滑坡的蠕变性。

In particular, the effects of rehabilitative training on glial cells, which play an important role in the pathophysiology of cerebral ischemia, are only poorly understood.

特别是康复训练对在大脑局部缺血的病理生理过程中扮演着重要角色的胶质细胞的影响，一直不甚明了。

During the rehearsal of a very hard, and the requirements of their particular high.

在排练的期间非常的刻苦，对自己的要求特别的高。

This particular convention is used because reification is intended for expressing properties such as dates of composition and source information, as in the examples given already, and these properties need to be applied to specific instances of triples.

使用这个惯例是因为具体化是被设计用于表达一些属性，如书写的日期，RDF数据远信息，就像例子中已经给出的那样，这些属性必须应用于三元组的特定实例。

A procedure in which a reinforcer follows any performance an organism emits except a particular one.

在一段时间后问题行为没有出现给予强化物的程序。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48