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On the basis of pollen analysis of surface sample in North China, polynomial function analysis method was applied to establish pollen climate response surface of Pinus, Betula, Quercus, Artemisia, Chenopodiaceae, Compositae, Picea, Ephedra, Gramineae in North China, therefore an easy and applicable method for reconstructing palaeoclimate and palaeoenvironment with data of fossil pollen was founded; Multi-analysis method was applied to analyse the principal elements of surface sample pollen in central Inner Mongolia Steppe, the assemblages of surface sample pollen in steppe area and its relationship with vegetation type were discussed with helps from spore-pollen analysis of a peat section in Chasuqi, Inner Mongolia and 〓C chronometer, fossil pollen data were obtained with high resolution on the peat section in Chasuqi. Vegetation succession and environmental changes since Holocene at resolution of 70 years were primarily reconstructed in south Mount Daqingshan and Plain Tumete. The changes in the area were copmared with those in the neighbouring areas during the same period. It was found that Holocene environmental change had undergone the following stages: cold-arid, temperate-wet, warm-wet, temperate-arid and cold-arid, and the climatical optimum period occurred in 5000-4100 aB.

本文在对中国北方表土花粉研究的基础上,采用多项式函数回归方法建造了中国北方松属、桦属、栎属、蒿属、藜科、菊科、云杉属、麻黄属、禾本科等的花粉——气候趋势面,从而为利用化石花粉资料直接恢复古气候、古环境提供了一种方便易行的方法;采用多元分析方法对内蒙古中部草原区表土花粉进行了主成分分析,探讨了草原区表土花粉组合的规律及与植被类型的关系;本文还应用孢粉分析方法,结合〓C测年技术,通过内蒙古中部察素齐泥炭剖面高分辨率的化石花粉数据,初步恢复了大青山山地南部及土默特平原地区分辨率为70年的全新世以来植被演替和环境变迁的状况,并与邻近地区的全新世古气候、古环境进行了对比研究,研究发现,本区域全新世古环境的变迁序列基本上可以与周围地区及华北地区进行对比,其环境变迁经历了凉干~温湿~暖湿~温干~凉干的变化,且气候最适宜期出现在5000~4100aB.P。

This thesis analyzes the situation of value ideas during the period of social transformation, the characteristics of the principal views of value of our society during the period of planned economy and the challenges they have met with.

本文分析了社会转型时期价值观态势以及计划经济时期社会主导价值观特点及其受到的挑战。

The principate of Julio-Claudian period created steady political situation, and precipitated the prosperity and mightiness of this period, thus layed the foundation of politics, territory, economics and culture for further development of Roman Empire.

朱理亚·克劳狄时期的元首政治为罗马帝国的发展创造了稳定的政治环境,促成了这一时期罗马社会的繁荣与强盛,从而为罗马帝国的进一步发展奠定了坚实的政治、地域、经济和文化基础。

When the embryonic original cell divided to form multicellur proembryos, the cell wall of the external cell was thickened to form a clear cell boundary to separate from ambient cells that was a phenomenon of isolation The protoderm began to be differentiated in the period of globular embryoid, and the procambium differentiated clearly in period of torpedo embryoid.

正常的球形胚和某些畸形球形胚继续发育,在心形胚或鱼雷胚阶段又出现出畸形胚,可以分为:①无茎端生长点;②原形成层发育不正常;③外形畸形,如有的是连胚,有的呈指状,有的呈叶片状等等。畸形胚有的败育,有的能继续发育,在子叶胚阶段形成畸形的植株。

His poetry style change constantly.This thesis thread is some important poetry collection in different period.Start with poetry ,unite poet's prose work and literature review, get in touch with poet's vicissitudes of life, surroundings, view and origin of literature and art. From the angle of creation,the author divides the poetry period into three, part: initial stage(write realistically and romantic),...

本文以诗人不同时期的重要诗集为线索,从诗篇入手,结合诗人的散文著作与文学评论,联系诗人的遭遇、所处环境以及诗观、文学艺术渊源,从创作实践的角度将他的诗歌创作分为学步期、探索期、成熟期三个时期加以讨论,指陈其思想、艺术成熟的轨迹。

Specially, the author hopes to find whether the financial system development promotes the provincial per capita, the accumulation of provincial savings, the formation of provincial capital, the advancing of productivity, the bettering of industrial structure and the shaping of firms. Finally, according to the result of the empirical study, the author brings forward the Contradiction of Chinese Financial System Development during transition period. To explain the Contradiction, the author puts forward a hypothesis: time consistency and institution coupling of the optimal system arrangements. Within the hypothesis framework, the author analyses and explains the contradiction's essential, and seeks the reason of Chinese financial system development's path formation during transition period. After judging the efficiency of Chinese financial system development prudentially, the author gives his advices on how to drive Chinese financial system to the"Growth-Enhancing Financial System Development"path. The dissertation is divided into five chapters. It consists of as follows: Part I includes foreword and Chapter One"the review of financial development theory and literature". In foreword, the author expounds the fundamental definition and basic theory. In Chapter One, the author first analyses the"finance-growth"nexus in theory, and which constitutes the foundation of the concrete mechanism of finance affecting growth.

首先对金融发展与经济增长的关系在理论上进行了梳理,指出金融发展能够促进经济增长,金融是现代经济增长的"第一推动力";其次将这种理论关系分解,借助当前本领域的最新研究方法和工具从宏观和微观层面验证转轨时期中国各地区金融发展与经济增长传导机制的效果,即金融体系的发展是否有效地促进了各地区人均产值的增加、储蓄的积累、资本的形成、生产力的提高、产业结构的调整以及企业的成长;最后在实证检验的基础上提出"中国金融发展悖论",并在"最优制度安排的动态一致性与制度耦合"假说的框架内来分析中国金融发展悖论的真实内涵以及中国金融发展路径形成的原因,审慎评价转轨时期中国金融体系的发展效率,初步探讨了中国金融体系走向"推动经济增长"金融发展道路,指出实现金融对现代经济的"第一推动力"作用所应努力的方向。

The later stage of Rome here refers to the period from the later period of Rome republic (approximately from the second Punic War) to the destruction of the Empire Rome.

这里所说的古罗马后期是指从罗马共和国晚期(大概从第二次布匿战争开始)到西罗马帝国灭亡这段时期。

Drama and novels drawn from the epics and Purana; poetry Fu in the romanticism .1890 published collection of poems,"the yearning heart," is his first mature works of the 90 age is .19 Tagore strong creative period, this period of short stories published over 60 articles against feudal oppression, unreasonable to expose real-life phenomenon, realistic literature of India opened the way to .1910, the famous novel "Gola," published works reflect the social life of India's complex phenomenon.

戏剧和小说多取材于史诗和往世书;诗歌富于浪漫主义色彩。1890年发表的诗集《心中的向往》是他第一部成熟的作品。19世纪90年代是泰戈尔创作的旺盛时期,这时期发表的60多篇短篇小说反对封建压迫,揭露现实生活中的不合理现象,为印度现实主义文学开辟了道路。1910年,著名长篇小说《戈拉》发表,作品反映了印度社会生活中的复杂现象。

In Xianfeng and Tongzhi period of the Qing Dynasty, and in the period of the republic of China,"utilizing the salt of Sichuan to purvey Chu" had twice brought the rapid development of Zigong salt industry, and given birth to the rich salt merchants.

清咸同年间和民国时期先后两次"川盐济楚"带来了自贡盐业的快速发展,催生了因盐致富的盐商群体的形成。

Result: Quadruplet pregnancy was an extremely rare disease, accompanied with multiple complications during the perinatal period. Its major clinical feature was excessly large uterine, the definitive diagnosis of quadruplet pregnancy depended on ultrasonography. With reason able prenatal examination and prevention from the multiple complications during the perinatal period, the quadruplet pregnancy could had a similar outcome as single birth.

结果:四胎妊娠的发生率极低,围产期并发症多,临床表现主要为子宫过度增大,明确诊断主要依靠超声通过合理的产前监测和对围产期并发症的防治,四胎妊娠仍能取得和单胎妊娠一样的良好结局。

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推荐网络例句

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。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力