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precipitation index
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  降水指数
     Monthly correlation coefficients between sea temperature anomaly in Pacific Region and Precipitation index of June,July and August in Ningxia,which are calculated in the paper, show that high coefficients have different temporal and spatial distribution.
     文中计算了太平洋地区各月海温距平与宁夏6、7、8月降水指数的相关,发现各月的高相关区在时间和空间上有所不同,分析了9次ENSO当年和次年宁夏各月降水变化的总体特征,发现宁夏夏季降水ENSO当年偏少,偏少程度占年偏少的65%~79%;
短句来源
     Through quantitative analysis,we find the area of arid region evaluated by wet/dry classification function is 15% larger than the result of the precipitation index,and the area of semi-arid and humid regions is individually 9% and 6% smaller than the result of precipitation index.
     从定量的角度讲,干湿分类函数估算的干旱区面积的45年平均值比降水指数估算的干旱区面积的45年平均值约大15%,其估算的半干旱面积的45年平均值比降水指数的结果约小9%,而两者湿润区面积的45年平均值相差约6%。
短句来源
     An index of precipitation was then induced as such: Symmetrically inverse channel 85 GHz's absorption segment and put it into the extension of the scattering segment. The precipitation index was formed as the average of three elements: uniformed 19 GHz, uniformed 37 GHz, and inversely uniformed 85 GHz.
     在此基础上 ,设计了一个降水指数 ,方法是 :将 85 .5GHz的吸收段对称拉伸到散射段的延长线上 ,然后求归一化后的 19.35 ,37.0GHz和经拉伸处理的 85 .5GHz图像 3者的平均值。
短句来源
     Standardization precipitation index and correctional Palmer drought index are used to establish index system of monitoring drought and waterlogging.
     利用标准化降水指数 ,参考修正的帕默尔 ( Palmer)干旱指数 ,建立适合于实时监测的旱涝指标体系。
短句来源
     Based on mean daily temperature and precipitation data from 1957 to 2000 in Shenyang area,the general characteristics and trends of temperature and precipitation variations were analyzed with linear trend analysis,Mann-Kendall break detector and Morlet wavelet transform method. Furthermore,their variation characteristics were discussed with the extreme temperature index and the extreme precipitation index.
     利用1957~2000年沈阳地区逐日平均气温、降水量资料,采用线性趋势分析、Mann-Kendall突变检测法和Morlet小波变换等方法,分析了近44a来沈阳地区气温和降水变化的总体特征及趋势,并利用极端气温和降水指数探讨了其变化特征。
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  降水指标
     COMPARISON BETWEEN STANDARDIZED PRECIPITATION INDEX AND Z-INDEX IN CHINA
     标准化降水指标与Z指数在我国应用的对比分析
短句来源
     Through analysis and comparison of the drought record and three drought indices based on precipitation in Taihu Basin,it can be found out that the best method is Z-index,followed by standardized precipitation index(SPI) and precipitation anomaly index(PAI).
     通过太湖流域干旱记录与三种基于降雨的常用指标的对比分析,得出Z指数法的精度最高,标准化降水指标(SPI)次之,降水距平百分率(PAI)最低,而且Z指数法显示太湖流域的旱情主要发生在夏秋季节。
短句来源
     (2)Based on the precipitation index for warning line and dangerous line at four stations,the rainstorm forecast can be used as a basis of pre-warning predic- tion of flood and waterlogging;
     (2)根据闽江(竹歧站)、九龙江(浦南)、交溪(白塔)、木兰溪(濑溪)4个站的达警戒水位或危险水位的降水指标,可利用暴雨预报作为洪涝预警预测的依据。
短句来源
  “precipitation index”译为未确定词的双语例句
     Research on the critical precipitation index of landslide based on GIS
     基于GIS的滑坡临界降雨指标的研究
短句来源
     On Relation of indirect Precipitation index of Han River Ankang Hydropower Station With Sunspot Activity
     汉江安康水电站降水间接指标与太阳黑子活动关系讨论
短句来源
     In this paper, based on 65 years of precipitation data in the Qingdao area, the gray forecast model group of precipitation index is established by using the gray topology forecast method, and the forecast for the future precipitation process and the flood and drought trends is made.
     根据青岛市 65 a的降水量序列 ,利用灰色拓扑预测方法 ,建立了降水量指标的灰色预测模型群 ,并对未来降水过程及水旱灾害发展趋势进行了预测。
短句来源
     Secondly, based on antecedent precipitation index method and the water equilibrium theory to set up prediction model of soil humidity, and to simulate and predict of soil humidity in no data station of climatic humid zone, the feasibility is discussed.
     其次,利用前期降水指数法(API)并结合水量平衡方程提出土壤湿度的一种初始化方案,将所建模型用于湿润气候区无资料站点的土壤湿度插补与预报试验,证明其应用的可行性非常好,拟合和预报本站土壤湿度的精度可达90%以上,拟合邻近站点的精度也可达85%以上。 同样,拟合土壤湿度的PDF试验结果表明,以β分布拟合效果最好,其检验方法同前。
短句来源
     The results revealed that either precipitation index or classification function of dry/wet as the reference standard, the total arid area, namely the sum of the arid area and the semi-arid area, showed the expanding trends in China in the past 45 years, and the case was more obvious in the latest 10 years.
     结果发现无论以哪种指数作为衡量干湿的标准,我国过去45年的干旱总面积,即干旱区面积和半干旱区面积之和,均为扩大趋势,湿润面积则为减小趋势,这种情况在近十年表现得尤为显著。
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  precipitation index
In the present study the Standardised Precipitation Index (SPI) is used to detect drought events in spatial and temporal basis.
      
Spatial and temporal analysis of drought in greece using the Standardized Precipitation Index (SPI)
      
Next, we studied the extremes of the Standardized Precipitation Index (SPI), which has been proposed as an indicator for monitoring wet and dry conditions.
      
The Standardized Precipitation Index (SPI) is used to assess the climatic conditions of the area, and principal component analysis (PCA) is applied to capture the pattern of co-variability of the index at different stations.
      
In this study, a new index, the Reconnaissance Drought Index (RDI) is proposed together with the well known Standardized Precipitation Index (SPI) and the method of deciles.
      
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The retation between the potential and the actual rate of infiltration through the soil in a basin has been approached. And an initial try at transforming one's infiltration volumes into another' s has been made by a mathematical hyperbolic model. It has been indicated obviously that in general case such transformed potential infiltration volume of the rainstormdropping on water sheds varies usually relatively to the covering condition of water basins,the durations of rainfalls or the antecedent precipitation...

The retation between the potential and the actual rate of infiltration through the soil in a basin has been approached. And an initial try at transforming one's infiltration volumes into another' s has been made by a mathematical hyperbolic model. It has been indicated obviously that in general case such transformed potential infiltration volume of the rainstormdropping on water sheds varies usually relatively to the covering condition of water basins,the durations of rainfalls or the antecedent precipitation indexes. The features of this relation are similar or even perfectly same to that of the formulas established on the theory of soil moisture dynamics. This proves that such hyperbolic model is effectual for computation of yield-water, and provides a good condition for generalization of its parameters.

本文探讨了流域土壤入渗能力与实际入渗率之间的关系。同时,以双曲模型为数学工具,进行了将实际的入渗量与可能的入渗量互相转换的初步尝试。结果表明,经过这样的转换所获得一般河流的流域上各次暴雨的可能入渗量,与流域的下垫面条件、降雨历时或表征雨前土壤初始含水量的前期降雨指数,关系相当明显;而且这种关系的特征与建立在土壤水动力学理论基础上的一些计算公式的特征,几乎完全一致。这就证明双曲模型用之于产流计算是可行的;并为产流参数的地区综合创造了条件。

In this paper drought and its impact on agriculture in last 500 years in the Shanxi-Hebei-Shandong-Henan region are analysed.And precipitation indexes in formulating drought-relief measures are discussed.

本文分析了晋冀鲁豫地区近500年来的干旱和干旱对农业的影响,讨论了农业抗旱对策制定所需考虑的降水指标。

The data used in this paper are the monthly mean SST in the North Pacific, the monthly mean height on 500 hPa, the characteristic values of the Subtropical High at 500 hPa and the summer precipitation indices in North China from 1951 to 1986. The time-space features of the SST oscillation in the north Pacific (STONP) and the relationship between the STONP and the intensity of the summer Subtropical High, the ridge line position of the summer Subtropical High and the summer precipitation in North...

The data used in this paper are the monthly mean SST in the North Pacific, the monthly mean height on 500 hPa, the characteristic values of the Subtropical High at 500 hPa and the summer precipitation indices in North China from 1951 to 1986. The time-space features of the SST oscillation in the north Pacific (STONP) and the relationship between the STONP and the intensity of the summer Subtropical High, the ridge line position of the summer Subtropical High and the summer precipitation in North China are analized respectively.

采用1951—1986年月平均北大平洋海表面温度(SST)、500hPa高度、副高特征量以及华北降水资料,分析了北太平洋SST涛动的时空特征及其与夏季副高、华北降水之间的关系,进而讨论了四月SST涛动偏强(弱)对八月副高偏强(弱)、副高脊线偏南(北)和华北降水偏弱(强)的影响过程.

 
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