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平均结构
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  mean structure
    The results indicate that simulated mean structure correctly exhibit the ABL diurnal variation from primary stable stratification to mixing layer developing and entrainment forming,then inversionappearing and mixing layer evolving to residual layer.
    结果表明,模拟的平均结构较好地展现了不均匀下垫面条件下边界层内从稳定层结到混合层发展,夹卷层形成,底层逆温层出现,混合层过渡到残留层等的演变过程,呈现出了从初始的稳定边界层发展到对流边界层,最后又形成夜间稳定边界层的日变化规律。
短句来源
    THREE-DIMENSION NUMERICAL SIMULATION OF EVOLUTION FOR THE MEAN STRUCTURE OF THE PBL IN HEIHE REGION
    黑河地区行星边界层平均结构演变的三维数值模拟
短句来源
    Numerical Simulation of The PBL Mean Structure and Fluxes in Heihe Region
    黑河地区边界层平均结构和通量的数值模拟
短句来源
    In this paper by using the composite method the mean structure aud the vo-rticity budget of the monsoon depression and the typhoon over the South ChinaSea are given.
    本文用综合方法给出了南海季风低压和南海台风的平均结构,并分别计算了它们的涡度收支.
短句来源
    An improved and developed high-resolution three dimensional mesoscale numerical model is used to simulate evolution of clear planetary boundary layer(PBL) in Heihe region with complex underlying surfaces and terrain, by using the data of FGGEⅢb in July 1979. The simulated results show that this model is capable for simulating mean structure and its evolution in the PBL in this region during Summer.
    本文利用一个改进和发展的高分辨三维中尺度数值模式,用FGGEⅢb资料对具有复杂下垫面和地形的黑河地区晴天边界层演变进行了模拟。 结果表明,该模式具有模拟该地区夏季边界层平均结构及其演变的能力。
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  “平均结构”译为未确定词的双语例句
    In the context of May to September 1980~1986 ECMWF dailr 850 hPa data,analy-sis is mad e of the seasonal mean and low-frequency structures for water transportation in theAsian stimmer monsoon region.
    应用欧洲中期预报中心(ECMWF)1980~1986年5~9月的850hPa逐日资料,分析了亚洲夏季风系统水汽输送的平均结构和低频结构。
短句来源
    In this paper the structure of two cyclones over the Changjiang-Huaihe River Valley is analyzed by using conventional meteorological data during the period of 23-25 June and 23-25 August, 1980. A moving network is used for obtaining the average distributions of composite elements, such as wind, temperature, relative humidity and precipitation.
    本文用1980年6月23—25日和8月23—25日的常规观测资料,分析两次江淮气旋的运动场和热力场的平均结构. 分析中使用了活动坐标网格,对风、温度、湿度和降水等气象要素进行合成.
短句来源
    The climatological structure and characteristics are studied using the 17-year NMC monthly winds and OLR data.
    应用NMCl7年热带u、v风及OLR资料研究了热带地区大气环流的平均结构和特征。
短句来源
    Results show that the monsoon system is a complete feature asviewed on a seasonal mean basis,and two relatively independent subsystems(the Indian and East-Asian monsoons)can be identified in the Asian summer monsoon system from the perspective ofthe low-frequency structure.
    研究指出,从季节平均结构来看,亚洲季风系统是一个完整的体系。 从低频活动结构看,亚洲夏季风系统中存在着印度季风和东亚季风系统的相对独立性。
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  mean structure
In this study, previous evaluations of the monthly mean structure of the tropical lower stratosphere in reanalyzed datasets are extended to include the period 1958-1978, when no satellite-based observations were available.
      
We then composite the tropopause mean structure before and after baroclinic events, finding that baroclinic disturbances cause the zonally averaged midlatitude winter tropopause height to rise.
      
A final family of 20 conformers is obtained with no distance violations larger than 0.24??, and RMSD values to the mean structure of 0.58 and 1.03?? for backbone and all heavy atoms, respectively (measured on residues 3-53).
      
The model includes the one whose mean structure consists of polynomial growth curves with different degrees.
      
The approach, which has several advantages over classical analysis-of-variance and general multivariate approaches, consists of postulating, fitting, evaluating, and comparing parametric models for the data's mean structure and covariance structure.
      
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A five-level PE-model was applied to simulate the formation of sub-synoptic systems using real data of rainfall amount and geopotentials. Experiment indicates that due to release of latent heat through condensation process in the numerical model a convergence zone and a sub-synoptic vortex develops in the precipitation region. The low level jet stream with scale about 500 km is located along the south side of heavy rain area. The wind profile, vertical circulation and location of low level jet reletive to the...

A five-level PE-model was applied to simulate the formation of sub-synoptic systems using real data of rainfall amount and geopotentials. Experiment indicates that due to release of latent heat through condensation process in the numerical model a convergence zone and a sub-synoptic vortex develops in the precipitation region. The low level jet stream with scale about 500 km is located along the south side of heavy rain area. The wind profile, vertical circulation and location of low level jet reletive to the heavy rain area are in agreement with average structures of Mei-Yu front. The dry numerical model can not give similary results.

本文利用五层原始方程模式、实际的等压面高度和雨量资料进行了次天气尺度系统生成的数值试验,得到的结果是:考虑了潜热的热源作用,在雨区附近的低空产生了一条辐合线,辐合线上有一次天气尺度的涡旋。低空急流的风速廓线、垂直环流及其与暴雨的关系和平均结构一致。用干模式所作试验不能得到类似的结果。

In this paper average structure and large scale heat, moisture and mo-mentum budgets of heavy rainfalls for two typical cases are examined. An important result is that the height of nondivergent level is about 500mb. There exists a convergence below it and a divergence above. Large-scale upward motions dominate the whole troposphere with a maximum value

本文对两个典型暴雨个例的平均结构、大尺度热量、湿度和动量的平衡进行了考察。一个重要的结果是无辐散层略低于500毫巴,其下面为辐合,上面为辐散。大尺度上升运动在整个对流层里,无辐散层处有一个极大值。此结构不同于强烈对流天气的结构。 由于次网格尺度的对流使总热量(热量和湿度)向上输送,因此对流层下部有总热量的净减而上部有净增;500毫巴以下有湿度的水平辐合,以上有水平辐散。对流层上半部的水汽来源于下部。在暴雨区上空由于凝结而在深厚气层中为视水汽汇(apparent sinks of moisture)。对流层中上部有动量向下输送,最大通量约为3—5达因·厘米~(-2)。次网格尺度的动能对能量平衡有很大贡献。

In this paper the structure of two cyclones over the Changjiang-Huaihe River Valley is analyzed by using conventional meteorological data during the period of 23-25 June and 23-25 August, 1980. A moving network is used for obtaining the average distributions of composite elements, such as wind, temperature, relative humidity and precipitation. Analysis shows that the mean wavelength of the cyclones is about 2000-2500 km, the closed vortex has a horizontal scale of 1000-1500 km and vertically extends to a 7-8...

In this paper the structure of two cyclones over the Changjiang-Huaihe River Valley is analyzed by using conventional meteorological data during the period of 23-25 June and 23-25 August, 1980. A moving network is used for obtaining the average distributions of composite elements, such as wind, temperature, relative humidity and precipitation. Analysis shows that the mean wavelength of the cyclones is about 2000-2500 km, the closed vortex has a horizontal scale of 1000-1500 km and vertically extends to a 7-8 km height and cyclone axis slops pronouncedly northward with height. The strongest cyclonic circulation and vorticity are at about 700 mb. The frontal zone is stronger at upper troposphere, but weaker in lower troposphere. There is a narrow cold zone nearby the centre and north side of vortex at about 700 mb and below. A heavy rain region appears in front of the depression, and is well coincident with the regions of upward motion and lower layer convergence.

本文用1980年6月23—25日和8月23—25日的常规观测资料,分析两次江淮气旋的运动场和热力场的平均结构.分析中使用了活动坐标网格,对风、温度、湿度和降水等气象要素进行合成.研究指出,这类气旋的波长为2000—2500公里,水平闭合环流的尺度为100—1500公里,垂直伸展高度达7—8公里左右,气旋轴线随高度显著地向北倾斜.气旋性环流和气旋性涡度在对流层中层的700毫巴附近最强.锋区在对流层上部明显,在对流层低层反而较弱;在气旋中心附近及其北侧,在700毫巴附近及以下仅有一狭窄的冷带.强降雨区出现在低压前部,与上升运动区及低层辐合区基本吻合.

 
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