助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   hydrological period 的翻译结果: 查询用时:0.203秒
图标索引 在分类学科中查询
所有学科
地球物理学
更多类别查询

图标索引 历史查询
 

hydrological period
相关语句
  “hydrological period”译为未确定词的双语例句
     Since 1995s, the water level of Bosten Lake, Ayding Lake and Aiby Lake raises obviously, and their water area is continuously enlarged. Under the effect of global climate change, it is considered that the change of the lakes in Xinjiang is mainly caused by regional climate change, hydrological period varication, and human to eco environment activities according to the analysis on the change of the water sources, slightly rise of temperature, increase of precipotation, etc.
     博斯腾湖、艾丁湖、艾比湖 1995年以来 ,湖水水位明显升高 ,湖水面积的不断扩大 ,从湖泊水面面积的演变过程 ,主要水源变化 ,气温略微上升 ,降水显著增多诸因素综合系统分析 ,说明在全球气候背景下 ,区域气候和水文变化周期与人类活动是影响其变化的主要原因
短句来源
  相似匹配句对
     Application of Wavelet Transform in Detection of Hydrological Sequence Period
     基于小波变换的水文序列的近似周期检测法
短句来源
     the inherited period.
     承袭期三个阶段。
短句来源
     Permian Period
     二迭纪
短句来源
     Some measures for raising hydrological long period forecast quality
     提高水文长期预测质量的一些做法
短句来源
     Informatization of Hydrological Service
     水文行业信息化研究
短句来源
查询“hydrological period”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  hydrological period
Phytoplankton of the Middle Paraná River During an Anomalous Hydrological Period: A Morphological and Functional Approach
      


Consisted of the oases, desert basins, plains, and surrounding mountains, the Xinjiang territory system is one of the main arid areas in northwest China. The adjacent mountain systems are the water source areas of all the streams, shallow groundwater, springs, and lakes because runoff does not occur in the desert basin and plain systems. The rivers from the mountains to the desert basins and plains are the main water feeding channels. Since 1995s, the water level of Bosten Lake, Ayding Lake and Aiby Lake raises...

Consisted of the oases, desert basins, plains, and surrounding mountains, the Xinjiang territory system is one of the main arid areas in northwest China. The adjacent mountain systems are the water source areas of all the streams, shallow groundwater, springs, and lakes because runoff does not occur in the desert basin and plain systems. The rivers from the mountains to the desert basins and plains are the main water feeding channels. Since 1995s, the water level of Bosten Lake, Ayding Lake and Aiby Lake raises obviously, and their water area is continuously enlarged. Under the effect of global climate change, it is considered that the change of the lakes in Xinjiang is mainly caused by regional climate change, hydrological period varication, and human to eco environment activities according to the analysis on the change of the water sources, slightly rise of temperature, increase of precipotation, etc.

由绿洲及其所在荒漠盆地平原与周边山地系统共同组成的新疆地域系统 ,是我国西北干旱区的主要部分之一。由于荒漠盆地平原系统不产生径流 ,因此 ,地表水、浅层地下水和泉水、湖泊都必然地以相邻的山地系统为供给水源地。从山地进入荒漠盆地平原的河流就成为主要供给渠道。博斯腾湖、艾丁湖、艾比湖 1995年以来 ,湖水水位明显升高 ,湖水面积的不断扩大 ,从湖泊水面面积的演变过程 ,主要水源变化 ,气温略微上升 ,降水显著增多诸因素综合系统分析 ,说明在全球气候背景下 ,区域气候和水文变化周期与人类活动是影响其变化的主要原因

The chemical composition of riverine sediment is the integration of the weathering crust minerals,soil organic matter and erosion dynamic within a specific drainage,which has been increasingly affected by human activities. Some metal elements of the riverine suspended sediments in the Zhujiang River were analyzed with the method of ICP AES at Makou and Sanshui hydrographic stations,which are located at the lower reaches of the Xijiang river and the Beijiang river,respectively,and in three different hydrological...

The chemical composition of riverine sediment is the integration of the weathering crust minerals,soil organic matter and erosion dynamic within a specific drainage,which has been increasingly affected by human activities. Some metal elements of the riverine suspended sediments in the Zhujiang River were analyzed with the method of ICP AES at Makou and Sanshui hydrographic stations,which are located at the lower reaches of the Xijiang river and the Beijiang river,respectively,and in three different hydrological periods from 1997 to 1998. Organic carbon and nitrogen were also analyzed with an element analyser. The analytical results demonstrate that the chemical element composition of the riverine suspended sediments changed significantly between the different hydrological periods,which was caused mainly by the variations of the mass fraction of organic matter in the suspended sediments. Intense erosion during the flood period makes the mass fraction of minerals become much larger than that of organic matter. However,during the lower water level,the week dynamic condition favors erosion of organic matter,which may adsorb some metal elements from surrounding water onto the surface of the riverine sediments.

用等离子体原子发射光谱法 (ICP AES)分析了珠江马口站和三水站 1 997— 1 998年度3个典型水文时段径流悬移质中部分金属元素的含量 ,同时用元素分析仪测定了其中的有机碳、氮的含量。结果表明 ,在不同性质的水文动力条件下 ,流域侵蚀产出的河流悬移质的化学组成发生了变化 ,这主要缘于有机质在悬移质中所占质量分数的差别。汛期增强的水文动力主要表现为对流域土壤矿物的优先侵蚀 ,虽然有机质的总侵蚀量也同时增加 ,但在悬移质中的质量分数却相对减少 ;而在枯水期较弱的水文动力条件下 ,河流悬移质中有机质的质量分数增加。悬移质中的有机质对液相中的部分重金属元素产生较矿物更大的吸附作用

The Tarim River Watershed is located in an arid and semiarid region,and its mainstream is completely recharged by its headstreams because there is no runoff formation in its mainstream area.Therefore,the runoff volumes of the headstreams at their debouchures and the water consumption in the headstream areas should be mainly considered in analyzing the utilization of water resources in the Tarim River Watershed.In this paper,the hydrological periods of runoff volumes of the headstreams at their debouchures...

The Tarim River Watershed is located in an arid and semiarid region,and its mainstream is completely recharged by its headstreams because there is no runoff formation in its mainstream area.Therefore,the runoff volumes of the headstreams at their debouchures and the water consumption in the headstream areas should be mainly considered in analyzing the utilization of water resources in the Tarim River Watershed.In this paper,the hydrological periods of runoff volumes of the headstreams at their debouchures in the upper reaches of the Tarim River are calculated based on the data measured by 10 hydrologic stations during the period from 1957 to 2003 by using the time series periodic variance analysis extrapolation method.According to the maximum principle of the difference between two data groups or the internal difference in one data group,the result reveals that the hydrological period of the three headstreams of the Tarim River is 17 years.Then the periodic superposition trend model is applied to predict the change trend of the total surface runoff volume of the three headstreams.The prediction model is expressed as: X(τ)= 200.984 439 95+0.513 206 81τ+d_(t+τ).The predicted results show that the stream flow from the headstreams to the mainstream of the Tarim River will be sharply reduced from 2006,the annual runoff volume of the mainstream will be 2.78×10~9 m~3 if the water consumption in the headstream areas is maintained at the level during the period of 1994-2003,and a shortage of annual runoff volume of 2.0×10~9 m~3 will occur comparing with the planned annual runoff volume of 4.6×10~9 m~3 for conserving and regenerating the ecology in the lower reaches of the Tarim River after 2005.Such situation will not only threaten the ecological safety in the lower reaches of the Tarim River,but also the stream flow of the middle reaches will be possibly cut off if the rational and active measures are not taken.

利用塔里木河源流区10个水文站1957-2003年的径流量资料,通过时间序列周期方差分析外推法计算了塔里木河上游三源流出山口径流量的水文周期,根据组间差异与组内差异最大的原则,得出塔里木河三源流的水文周期为17 a;利用周期叠加趋势模型对塔里木河三源流出山口总径流量的变化趋势进行了预测,预报模型为:X(τ)=200.984 439 95+0.513 206 81τ+dt+τ。从预测模型的预测结果看,从2006年起将出现一个源流来水量大幅减少的时段,如果不采取积极的对策和解决措施,塔里木河干流的生态问题将更加严峻。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关hydrological period的内容
在知识搜索中查有关hydrological period的内容
在数字搜索中查有关hydrological period的内容
在概念知识元中查有关hydrological period的内容
在学术趋势中查有关hydrological period的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社