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辐射指数
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  radiation index
     The forecasting accuracy of Ultraviolet Radiation Index(UVI)depends on the calculating exactness of UV radiation intensity.
     地表紫外辐射强度计算的准确与否 ,直接关系到紫外辐射指数 (UVI)预报的准确性 ,其计算方法受到气象部门的特别重视。
短句来源
     To make predictions of ultraviolet radiation index on groud surface is one of the main tasks for domestic weather services. Proceeding from the necessity to establish a system for prediction and countermeasure of ultraviolet radiation on ground surface,it explains the principle,structure and function of the system.
     地表紫外辐射指数预报是国内专业气象台的主要业务之一 ,从建立地表紫外辐射预测和对策系统的必要性出发 ,阐述了该系统建立的原理、系统的结构和功能等
短句来源
  “辐射指数”译为未确定词的双语例句
     After the radiometric, atmospheric and irradiance correction of the airborne MSS data, a standardised radiance index was highly correlated with dye concentration (r = 0.85, significant at the 99% confidence level).
     航空多光谱扫描数据,经过辐射、大气和辐射纠正后,所得的标准化辐射指数与染料浓度密切相关(r=0.85,相关在99%置信度水平上显著)。
短句来源
     The intermonthly distribution of ultraviolet radiation shows a tendency of higher in the month from March to September is and lower in the other months of the year,and the maximum ultraviolet index is 11.4.The daily change curve of ultraviolet radiation is a normal distribution curve,which shows a tendency of higher at noon is and lower in the morning and evening.
     结果表明:商丘紫外线辐射月际分布是,年初、年底辐射量小,3~9月辐射量大,最大辐射指数为11.4; 紫外线辐射的日变化规律显著,基本上遵循正态分布,呈抛物线型变化,早晚辐射量小、中午前后紫外线辐射量大;
短句来源
  相似匹配句对
     High Emissivity and Magnetic Coupling Process in Accretion Disc Radiation
     吸积盘辐射的高发射率指数研究
短句来源
     CHANNELING RADIATION
     沟道辐射
短句来源
     Indices in Renal Failure
     尿指数
短句来源
     On radiation from printed circuits
     印制电路的辐射
短句来源
     Index number for atmospheric pollution
     大气污染指数
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  radiation index
wind exposure, solar insolation, solar radiation and radiation index), three anthropogne (visibility of lighthouse beam, visibility of antropic zones and distance to antropic zones) and one biotic (vegetation cover).
      
A total of 14 indices categorized into solar radiation index, wetness index, and topographic exposure index were used to model the site index by multiple linear regression analysis.
      
Six topographic factors (slope, profile curvature, plan curvature, openness, wetness index, and topographic radiation index) were calculated from a 10-m cell size digital elevation model.
      
For the tree model with ANPP as a dependent variable, four environmental factors (annual mean temperature, wetness index, openness, topographic radiation index) were adopted as independent variables.
      
A contemporary change and parallel course with a high positive correlation can be found in a solar radiation index calculated by means of sunspot numbers and solar faculae areas.
      
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To monitor the dispersion and dilution performance of a sewage outfall a dye can be injected into the sewage and the resultant plume tracked by boat. In recent years remotely sensed imagery has proved to be a useful adjunct to boat survey as it provides a synoptic view of a plume at an instant which, as a result of tide, wind and current changes, a boat survey is unable to do.The aim of this survey was to use airborne multispectral scanner (MSS) imagery and a methodology of modeling, inversion and accuracy assessment...

To monitor the dispersion and dilution performance of a sewage outfall a dye can be injected into the sewage and the resultant plume tracked by boat. In recent years remotely sensed imagery has proved to be a useful adjunct to boat survey as it provides a synoptic view of a plume at an instant which, as a result of tide, wind and current changes, a boat survey is unable to do.The aim of this survey was to use airborne multispectral scanner (MSS) imagery and a methodology of modeling, inversion and accuracy assessment to estimate and map the concentration of three dyed plumes of sewage. After the radiometric, atmospheric and irradiance correction of the airborne MSS data, a standardised radiance index was highly correlated with dye concentration (r = 0.85, significant at the 99% confidence level). Following inversion and extrapolation of this relationship to all of the airborne MSS data, twenty two plume plots were produced. For a seven-class classification of dye concentration these plume plots had an accuracy of 49-90% at the 95% confidence level increasing to 68-100% at the 95% confidence level for a two-class classification.

为了监测污水排放后扩散和稀释的过程,可在污水里注入染料,利用考察船追踪其羽状扩散痕迹(以下简称痕迹)。最近几年的实践证明,遥感影像是船只调查的有效辅助手段。这是因为遥感影像可实时显示大范围的痕迹,而船只调查,由于潮汐、风和水流变化的缘故,是不能做到这点的。 本文所描述的调查,旨在通过机载多光谱扫描影像和模型化、反演及精度评价等一套方法,对三种染色的下水道污水浓度作出估算与制图。 航空多光谱扫描数据,经过辐射、大气和辐射纠正后,所得的标准化辐射指数与染料浓度密切相关(r=0.85,相关在99%置信度水平上显著)。将这个关系对所有航空多光谱扫描数据进行反演和外推后得到22个痕迹图。作7组分类时,染料浓度的痕迹图,在95%的置信度水平上,达到49-90%的精度;作2组分类时,在95%的置信度水平上,精度提高到68-100%。

he phenomenon of anomalous peak in the vertical distribution of underwater irradiance, and its main features are reported. A three-parameter model, based on optical properties and the exponential equation of total radiance, is developed and used to model the downwelling and upwelling irradiance at each depth selected. The three parameters are a (z), bb (z) and μ (O), absorption coeficient, backscattering coeficient and initial value average cosine respectively. The modeling results show good compared with the...

he phenomenon of anomalous peak in the vertical distribution of underwater irradiance, and its main features are reported. A three-parameter model, based on optical properties and the exponential equation of total radiance, is developed and used to model the downwelling and upwelling irradiance at each depth selected. The three parameters are a (z), bb (z) and μ (O), absorption coeficient, backscattering coeficient and initial value average cosine respectively. The modeling results show good compared with the ones measured in situ. The mechanism of the anomalous peak is analysed primarily.

简述了水下辐照度异常尖峰分布现象和它的主要特征,根据海水光学参数的关系及水下总辐射的指数衰减方程导出了上行和下行辐照度垂直分布的三参数模型,该模型包括三个参数:海水体吸收系数a(z)、后向散射系数bb(z)和平均余弦的初始边界μ,(0)。利用该模型对几种典型水体中辐照度垂直分布的模拟结果与海上实测结果很一致。在模拟计算基础上,分析讨论了异常尖峰的产生机制。

The forecasting accuracy of Ultraviolet Radiation Index(UVI)depends on the calculating exactness of UV radiation intensity.Simplified atmosphere radiation transmission model,discrete-coordinate method,climatologic experiential model are adopted to calculate the Ultraviolet radiation in Nanjing.The computational results are compared with the observation data.It is shown that the computational results are consistent with the observation data in general.As a result,these three models are all workable.

地表紫外辐射强度计算的准确与否 ,直接关系到紫外辐射指数 (UVI)预报的准确性 ,其计算方法受到气象部门的特别重视。采用简化大气辐射计算模式、离散坐标 (DISORT ,discrete -coordinate-method)辐射传输算法、气候学经验模式及观测的方法研究了南京地区紫外辐射量的变化。计算与观测的比较显示 ,简化模式、DISORT及气候学方法的计算值与观测结果具有较好的一致性。表明三种模型都具有一定的可靠性。

 
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