Radar data assimilation had a obviously improved effect on the mesoscale system in ground of squall line, especially in the previous 2-3 hours, which made the ground thunderstorm high pressure of simulation and wind field closer to the observation.

雷達資料同化對颮線地面中尺度系統(tǒng)的模擬有明顯的改進作用天天狠天天透天干天天喷水，尤其是在前23 h效果非常明顯，使模擬的地面雷暴高壓和風場更接近實況。

Analysis and a numerical simulation study are carried out to investigate the effects of surface fluxes on the development of a long-lived severe squall line that occurred on 12 July 2004 near Shanghai using the RSM-RANAL re-analysis data and WRF model.

使用水平分辨率20km的RSM-RANAL再分析資料和WRF模式，對2004年7月12日影響上海地區(qū)的一次颮線過程進行分析和數(shù)值模擬亚洲国产青春福利，結果表明：(1)雷暴發(fā)生區(qū)域的西北側約300km處有一冷鋒，地面風場輻合五月天天久久综合；中低層為一致西南急流黄色网站免费看看，雷暴發(fā)生區(qū)域上空300h Pa位于西風急流右后側輻散區(qū)中；地面存在明顯的溫度梯度可以看性爱视频的网站。

The central plains area of 603.25 square kilometers, accounting for a total area of the county's 60.4 percent, Jingshan railway north of the ground at an altitude of 50 meters height above the hills locally exposed, relatively flat terrain, the ground elevation Jingshan railway generally south of 30 -50 m, because of wind and rivers, sand dunes occur more frequently valley.

中部平原區(qū)面積603.25平方公里正在播放麻豆国产AV，占全縣總面積的60.4%，京山鐵路以北人人色人人干，地面高程在海拔50米以上黄色视频无码在线，局部有山丘出露，地勢較為平坦欧美的天堂wwwwww，京山鐵路以南地面高程一般在30—50米，由于受風沙影響及河流切割igao网，沙丘溝谷出現(xiàn)較多国产乱伦熟女视频。

Analyzed on the tunnels that used EPB method in different soils, the more logical three-dimensional finite element model is based, which can reality represented the soil transfiguration. 3 Due to the engineering example, a 3D FEM simulation model was founded. The model was used to study the rules of soil deformation and surface settlement during shield tunneling. 4 The characteristics of loess include the module, conglutination force and inner friction angle of the loess, affected the soil deformation. 5 The influence factors to the surface settlements such as the depth of soil, the outer diameter of the shield tunnel, the released stress at the cutting face, the fill ratio of the shield tail void, pouring-slurry press, thrusts and lengths of shield and digging steps were studied using the FEM method. References is brought forward in the loess areas of Xi'an was proposed.

通過對不同土質條件下盾構法進行地鐵隧道施工的有限元分析，全面反映盾構推進對土體變形的影響情況一免费级做a爰片久久毛片A片； 3根據有關勘測資料欧美日韩性爱成，建立合理的盾構法施工三維非線性有限元模型，對盾構法施工引起的地層變位和地表位移情況進行計算国产无码视频麻豆，分析了盾構施工引起的地層變形規(guī)律和地面沉降規(guī)律午夜福利国产a； 4研究了黃土特性(地基模量、粘聚力和內摩擦角)對盾構法施工中土體變形的影響欧美特黄特级作爱大片www； 5利用三維有限元對盾構施工過程中影響地面沉降的因素(覆土厚度无码不卡在线观看网站视频、隧道外徑、開挖面壓力變化量欧美性午夜福利、注漿壓力在线观看国产美乳视频网站大全免费、盾尾空隙填充率、開挖步長91精品综合欧美在线、盾構機的長度和推進力等)進行研究思思精品视频导航，為今后西安地區(qū)地鐵的建設提供參考。

What frost points to is air temperature falls to when 0 ℃ are the following, the white ice crystal that the lunt in close ground air condenses on the ground or upper object, also call " of " Bai Shuang.

霜指的是氣溫降至0℃以下時亚洲,日韩,国产第一区二区，近地面空氣中的水汽在地面或地表物體上凝聚成的白色冰晶免费女自慰喷白浆自慰网站，也稱為"白霜"。

Mulch can be added late in autumn to help moderate the effects of winter weather. The best time is after the ground has frozen but before the coldest weather arrives. Spreading mulch before the ground has frozen may attract small animals searching for a warm place to spend the winter.

蓋土可以在晚秋時節(jié)加入国内自拍第十六页日韩在线观看，以此緩和冬天氣候的影響一区高清精品视频在线观看，最好的時機是在地面結凍后但在最冷的天氣到來之前免费黄色网站视，在地面結凍之前鋪上蓋土會吸引要過冬的小動物來尋找溫暖的地方造窩。

The types of karst hazards involve uneven subsidence, fissure, landslide, collapse, mudflow and cave-in.

巖溶地質災害的形式包括地面不均勻沉降成品直播大全免费观看网站视频下载、地裂縫國產無碼色視頻在線、滑坡、崩塌毛片无毒不卡、泥石流和地面塌陷AAAAAAAAA欧美A片。

Theoretically, the new operator can describe the function of surface observation in Data Assimilation better.

理論上說，新的地面氣壓觀測算子能更好地描述近地面氣壓觀測在模式中的物理特性国产精品女视频一区二区。

Correlation matrix and calculation method of joint parameter of network for low osmose oil field are established, which offer a favorable method for solving network problem with computer.

：建立了油田地面網絡的相關矩陣及節(jié)點的參數(shù)計算通式伊人欧美在线视频免费版观看网址，為計算機處理油田地面網絡問題提供了有利手段。

Abstracts: Correlation matrix and calculation method of joint parameter of network for low osmose oil field are established, which offer a favorable method for solving network problem with computer.

摘 要：建立了油田地面網絡的相關矩陣及節(jié)點的參數(shù)計算通式免费看黄色A网站，為計算機處理油田地面網絡問題提供了有利手段久久99精品国产。