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世纪下半叶
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  latter half of 20 th century
     Brief history of development of institutions of traditional Chinese medicine in latter half of 20th century
     20世纪下半叶北京中医医疗机构发展史略
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  “20世纪下半叶”译为未确定词的双语例句
     Development and Trend of Class Management Concept in the USA since the Latter Half of the 20th Century
     20世纪下半叶以来美国班级管理理念的发展趋势分析
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     Since the second half of the 20th century, the strands of Western literary thoughts and Christian spirit have begun to join each other and the relation between Christian culture and contemporary literary values is getting tighter.
     基督教文化也与当代文学价值走向紧密关联,20世纪下半叶以来,西方文学思想已经和基督教精神开始合流,但既要看到“宗教”与“宗教精神”的差异性,又要看到当代创作显示出的与基督教文化价值取向的一致性。
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     The develop career of HeiLongJiang higher education ofmusic in the latter half of 20 century
     20世纪下半叶黑龙江高等音乐教育的发展历程
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     In the late 20th century, the integration of translation study and corpus lays a foundation for the corpus - based translation study.
     20世纪下半叶,翻译研究与语料库语言学的融合为基于语料库的翻译研究奠定了基础。
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     After the middle of 20th century, the integrated science curriculum arose the attention of international science education domain.
     20世纪下半叶,综合科学课程引起了国际科学教育领域的关注。
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     Some 20th Century Historians.Edited by S.William Halperin.
     《20世纪的史学家》
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     Skyscrapers in the 20th Century
     20世纪的摩天楼
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     The Development of Western Historical Epistemology in the Second half of the 20~(th) Century
     20世纪下半叶西方史学认识论的发展
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     The Mainstream of Distance Education in the World During the Second Half of 20~(th) Century-Review and Prospect of Distance Education in the World(3)
     20世纪下半叶世界远程教育的主流
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     A Synthetic View on the Exchanges of Chinese and Western Children′s Literature in the Latter Part of the 20th Century
     20世纪下半叶中外儿童文学交流综论
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According to 300 geographical and historical references the south boundaries of snow events in Guang Dong since 1500 A. D. are given in each half century and compared with the observed south bounrary of snow events of 108 meteorological stations in 1950- 1985. A little variations can be seen in East Guang Dong and all the historical boundaries locate in the south side of the modern boundary in Central Guang Dong. Much variations of the historical boundaries are seen in West Guang Dong, maximum amplitude about...

According to 300 geographical and historical references the south boundaries of snow events in Guang Dong since 1500 A. D. are given in each half century and compared with the observed south bounrary of snow events of 108 meteorological stations in 1950- 1985. A little variations can be seen in East Guang Dong and all the historical boundaries locate in the south side of the modern boundary in Central Guang Dong. Much variations of the historical boundaries are seen in West Guang Dong, maximum amplitude about 4 latitudinal degrees. The south boundaries of snow events had been found in the north coast of Hainan Island in the seventeenth century and first half of tha nineteenth century.

根据近300种方志及其他文献对广东自公元1500年以来的降雪记载,绘出每50年广东降雪南界,与1950—1985年间广东108站气候记录的降雪南界相比较。可以看出,广东东部的降雪南界有些南北迁移,广东中部则均比现代降雪南界更南些,而广东西部变迁较大,南北相差幅度近4纬距之多,十七世纪和十九世纪上半叶,降雪南界都曾推至海南岛北部沿海地区。 比较1950—1985年广东的极端最低气温的分布,发现降雪南界约相当于极端最低气温为-1℃的等值线。由此推算,十七世纪及十八世纪上半叶,广东东部沿海曾出现-1℃的极端最低气温,珠江三角洲北部多数时期极端最低气温达到-1℃或以下,而南部在十七世纪和十九世纪也达-1℃,广东西部除十六世纪下半叶、十八世纪下半叶及二十世纪上半叶外,均较现代为低,尤以十七世纪和十九世纪上半叶为最,雷州半岛及海南岛的极端最低气温要比现代低2—3℃。

The economic integration between Canada and

加美经济一体化是不可避免的历史趋势,但过程多久,利弊如何,有不同估计。加拿大对经济一体化既看到有可取的方面,又担心丧失自己的特性。这个过程将充满矛盾和斗争,但大势所趋,似难逆转。到下世纪下半叶,这个过程基本可以完成,但远远谈不上政治一体化。

Based on abundant historical documents and tree rings, we carried on the evolution of late Holocene environments in Central North China, and the precipitation and temperature se-ries for the last 2200 years have been reconstructed. We also throw light on the cool-warm, wet-drought periodic and rapid climatic changes in Late Holocene. Due to the advance and retreat of the summer monsoon, the model of environmental changes of this region, indicated that the warm and wet came together, but as an exception, there...

Based on abundant historical documents and tree rings, we carried on the evolution of late Holocene environments in Central North China, and the precipitation and temperature se-ries for the last 2200 years have been reconstructed. We also throw light on the cool-warm, wet-drought periodic and rapid climatic changes in Late Holocene. Due to the advance and retreat of the summer monsoon, the model of environmental changes of this region, indicated that the warm and wet came together, but as an exception, there was a phenomenon that the cold accompanied with the wet in the late Little Ice Age. This abnormality was caused mainly by the high instability of climate during the Little Ice Age. Finally, we discussed the mechani-sm of environmental changes over the last 2 200 years in Central North China and the inter-nal and external causes of climatic changes at different time scales.

本文利用丰富的历史资料和树木年轮资料,恢复了我国中原地区晚全新世2000余年以来的环境变化,建立了2200余年的降水变化序列。划分了晚全新世以来本地区的干湿和冷暖期。受晚全新世以来的季风环流的影响,本地区环境变化的基本模式是暖湿与冷干对应。然而,在小冰期时期特别是17世纪下半叶以后,这种模式有所改变,即冷湿对应。其主要原因作者认为有二:一是小冰期时期天气系统超常不稳定,这是由于地球气候系统的内外因素改变造成的;二是小冰期时夏季风锋面南移至中原一带,增加了本地区的降水。最后还讨论了晚全新世以来本地区季风变化的过程、机制以及它们所带来的环境变化。并提出了未来环境变化的可能趋向。

 
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