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spatial scale中文是什么意思

  • 空间尺度

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  • The mutation , contrast and heterogeneity of ecological interface between oasis and desert ecosystem increased . rare natural or non - regional mosaic of patch show obvious sensitivity to spatial scale , the change ratios of theirs area and perimeter are greater than large patch
    同时通过测度敏感性检验,表明在尺度变换中,稀少的自然或隐域性斑块镶嵌体对空间尺度敏感性大,面积、周长等变化率大于大斑块,随尺度中度干扰则合并成较大的斑块,随尺度强烈干扰或隔离加强后最先消失。
  • There are two driving factors which are population density ( x1 ) and gdp ( x2 ) . from spatial analysis , another regression equation showing spatial scale land use change is established . 11 spatial driving factors are derived from 47 indexes , that are x1 slope ( % ) , x2 organic matter ( % ) , x3 soil available n ( g / kg ) , x4 soil available p ( g / kg ) , x5 soil texture ( 1 - 4 ) , x6 production value in unit area of arable land / production value in unit area of other land , x7 production value in planting industry / production value in whole agricultural industries ( % ) , x8 average farmer income from agricultural industries / farmer whole income ( % ) , x9 average farmer income from planting industry , x10 crop yield of average farmer , x11 population density
    邯郸地区耕地变化时间和空间驱动因素分析表明:耕地面积的变化驱动因子为x1人口密度和x2人均gdp ;空间上经逻辑斯谛( logistic )回归分析,从47个驱动因素中发现11个决定耕地空间分配的驱动因素: x1为地表坡度( ) , x2为有机质含量( ) , x3为土壤有效氮含量( g kg ) , x4为土壤有效磷含量( ykg ) , xs为土壤质地, x6为农地单位面积产值非农地单位面积产值, x7为种植业产值l农业总产值( ) , xs为农民人均农业总收入农民人均总收入( ) , xg为农民人均种植业收人, x10为人均粮食产量, xll为人口密度,并建立回归方。
  • The assimilation experimentation results indicate that after assimilating radar wind field of small spatial scale , mesoscale and small - scale precipitation prediction can be improved and mesoscale and small - scale information which ca n ' t appear by tradition datum can be gained , which is valuable to analyze the mesoscale and small - scale system structure ; the effect assimilating radar humidity field is n ' t obvious , which is perhaps correlation with precipitation types and assimilating time . the results also show that adding radar humidity field to initial condition at initial time can supply the gap of the regular data in reflecting the mesoscale and small - scale systems , strengthen the humidity in the initial field , and eventually help to improve precipitation . the experiment of assimilating radar wind field and radar humility field at the same time shows that vapor transportation and local vapor divergence play more significant role in causing excessively heavy rain than only high wet center
    同化试验结果表明:同化空间分辨率很高的雷达风场后,能改善中小尺度降水的预报效果,并且能够得到常规观测资料所不能得到的中小尺度信息,对分析中小尺度系统结构具有重要意义;同化雷达湿度场效果不明显,可能与降水类型和同化时刻有关;而直接在初始时刻加入雷达湿度场,补充了常规资料在反映中小尺度系统方面的不足,增强了初始场中的水汽,有利于降水量的增加;同时同化雷达风场和雷达湿度场的试验表明,水汽的输送和局地的水汽辐合对于产生特大暴雨的贡献远大于仅有高湿中心的贡献。
  • It is the effective way to realize the highly quantitative study on the geographical process that associates main geographical factors such as climate , hydrology , topographic features , soil , vegetation and human activities with geographical process for quantitatively calculation by selecting suitable spatial scales and using mathematic models based on computer
    选择适宜的空间尺度,把气候、水文、地形、土壤、植被、人类经济活动等主要地理因素和过程通过抽象建立地学分析数学模型,进行定量运算,是实现地理过程高度定量化研究的有效途径。
  • Geostatistics can not only be applied to assess the distribution of soil properties , but also to estimate the spatial scales and forms of soil variation , in order to give rise to the validity of soil sampling , it also can be used to research the courses of soil variability
    地统计学既可用来估测土壤性质的分布,也可用于确定土壤变异的空间尺度和形式,以提高采样的有效性;还可用于研究引起土壤变异的各种过程。目前,应用地统计学的原理和方法仍是国内外定量化研究土壤空间变异的趋势之一。
  • Date integration technique was used to analyze the relationship between monthly mean daily clearness index kt and s , the ration of monthly mean daily sunshine duration to possible sunshine duration as well as that of monthly mean daily direct transmittance kb . based on data from 1957 to 2000 , a series of kt and kb estimation models with different temporal and spatial scales were established . furthermore , the distributions of kt and kb from january to december in chongqing were mapped by kriging interpolation for long - term mean
    大气辐射过程模拟通过晴空指数、直接透射率等综合描述大气对太阳辐射影响的参数,采用重庆市及其周边地区1957 - 2000年日射站观测的月辐射资料和常规月气象观测资料,利用数据集群技术,建立了不同时空尺度的太阳辐射估算模式;使用kriging插值法,完成了重庆市气候平均状况下各月晴空指数、直接透射率的空间制图。
  • Based on the study of the fore going ' s , this thesis regards time - cell , time - center and time - distance as the basic elements of urban time structure . secondly , carry out three constructing principles - - " spatial scale " maps " time distance " , maintain basic spatial structures , extrude main time structures . thirdly , summarize four expressing forms of urban time structure of which isotime curve , isotime circle , time contour and time network
    理论探讨部分基于前人的研究成果初步确定时间单元/时间细胞、时间中心/时间基点和时间距离为城市时间结构的基本组成要素;提出时间结构构筑的三原则: “空间尺度”映射“时间距离” 、维持空间关系之基本格局、突出表达主干时间关系;时间结构的表达则从时间结构的形态方面总结出等时线、等时圈、时间廓线图和网络图等表达形式;最后提出城市时间谱概念来评价城市时间结构的优劣。
  • Solar radiation models of different temporal and spatial scales were established by using ground observed data from meteorological stations . a series of distributed models were developed based on principles of direct and diffuse radiation on tilted surfaces and integrated with gis software . using dem data of chongqing , the distributions of direct and diffuse radiation over rugged terrains were simulated
    本文利用重庆及其周边地区的日射站和常规气象站水平面观测资料,建立不同时空尺度的太阳辐射估算模型;依据坡地直接辐射和散射辐射机理,以地理信息系统为数据处理平台,建立起伏地形下太阳辐射分布式估算模型;根据重庆1 : 25万dem数据,对重庆实际复杂地形下太阳直接辐射和散射辐射进行了数值模拟,为起伏地形下辐射估算及其他地表气象要素的空间扩展提供有益的尝试。
  • Thirdly , present status of effect of erosion on soil carbon and nutrient has been illustrated in spatial scale of the watershed . based on geographic information system , actuality and process of soil erosion in and between land units were simulated , and actuality and process of annual and long term changing of soil carbon and nutrient in each land unit under erosion were sufficiently calculated and illustrated . results of simulation and illustration showed that , the relative area in which soil carbon , nitrogen , phosphorus and potassium is deceased is 44 . 1 % , 55 . 8 % , 39 . 2 % and 75 . 7 % respectively
    三、在流域空间范围内描述了侵蚀影响土壤碳和养分的现状:在地理信息系统的支持下,模拟了流域各地块的侵蚀过程、现状,充分描述了各个地块在侵蚀影响下土壤碳和养分的年变化现状、过程及多年变化过程,得到在现有侵蚀及耕作管理条件下,全流域中土壤碳、全氮、全磷、全钾下降的地块面积分别占流域总面积的44 . 1 、 55 . 8 、 39 . 2 、 75 . 7 ,以及各个地块的碳和养分含量变化趋势,弥补了前人研究在地域华中农业大学2001届硕士研究生学位论文空间联系上的不足。
  • The main objectives of the study are illustrating behaviors , approaches and processes of soil erosion affecting contents of carbon and nutrient in soil , and simulating its dynamic changing in spatial scale , and providing a methods of estimating content changes of carbon and nutrient under the affluences of soil erosion to guide the practices of soil erosion control , management and programming
    本研究的主要目的是探明土壤侵蚀对土壤碳及养分含量影响的表现、途径和过程,并在空间上模拟其动态过程,最后提供一种较为精确计算土壤侵蚀影响下土壤碳和养分含量变化的途径,从而为侵蚀治理、规划、设计以及生态环境建设提供了理论依据和实践指导。
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Last modified time:Tue, 12 Aug 2025 00:29:56 GMT

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