English translation for "扬沙"
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- blowing dust
jansa jansha
- Example Sentences:
| 1. | In early 2001 , there were strong winds , flying dust , flying sand and sandstorms in hexi corridor and part of inner mongolia , which influenced part of the north china , including beijing 2001年年初,河西走廊、内蒙古部分地区出现大风、浮尘、扬沙和沙尘暴天气,并影响到包括北京在内的华北部分地区。 | | 2. | A large area of bare sandland distributed in beijing and its surrounding areas is one of sand source areas which contributes to high - frequent sand storms in beijing in recent years , whereas increasing of surface coverage condition is one of effective measures to lessen local blown - sand activities 摘要北京及其周边地区分布的大量裸露沙荒地是北京近年来沙尘暴频发的主要沙源之一,而增加其地表覆盖状况则是遏止就地扬沙起尘的有效措施之一。 | | 3. | 2 ) from the analysis of the aerodynamic parameters and turbulent flux transfer under different synoptic conditions we achieve the conclusion that on sands raising and sandstorm days turbulent momentum and sensible - heat fluxes are important exchange factors in the boundary layer , with turbulent exchange stronger in sandstorm weather than both on fine and sand raising days . prior to the occurrence of such an event , in particular , the super - adiabatic instability in the near - surface boundary will reinforce sandstorm weather condition . 3 ) atmospheric turbulent diffusion parameters z and y have apparent daily variation 沙尘天气下以亲地壳元素为主的气溶胶元素浓度均高于背景大气和浮尘天气,而且沙尘天气强度愈强,元素浓度的增加愈显著;背景大气、浮尘天气条件下亲地壳元素的浓度一般在10 ~ ( - 1 ) 10 ~ 0 g m ~ 3量级,扬沙、沙尘暴时一般达10 ~ 1 g m ~ 3量级,特强沙尘暴时高达10 ~ 2 g m ~ 3量级。 | | 4. | Gas - solid two - phase flow is existed widely in multiphase flow system , for example , desert sand in nature , fuel transportation in field of chemical industry , metallurgy , energy sources and foodstuff , and so on , as well as pneumatic conveying and dust treatment of materiel in bulk ( i . e . sands , corn and plastic granula etc . ) . in addition , sulfureted bed , whirlwind dust - exhaustion , sedimentation room and filtration process are involved with gas - solid two - phase flow 气固两相流在多相流体系中普遍存在,例如,自然界的大漠扬沙,化工、冶金、能源和粮食等领域的燃料配送,散装物料(如沙子、谷物、塑料粒)的气力输送和粉尘处理等,硫化床、旋风除尘、沉降室及过滤过程中也会涉及到气固两相流。 | | 5. | Abstract : according to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol , tsp and its particle size distribution , micrometeorology , and the solar spectroscopic radiation , even the neutron activation treatment of sand dust samples in helan mountainous area , the formation law of sandstrom , dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of helan mountain are counted and analysed 文摘:利用贺兰山地区沙尘暴历史资料和综合观测资料,对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒( tsp )及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理,分析了该地区浮尘、扬沙和沙尘暴形成规律,气候变化特征和贺兰山的影响。 | | 6. | Based on the spectral irradiance measured with the sun - atmosphere ultraviolet spectrum radiometer ( sauvs ) developed by the institute of atmosphere physics and the changchun institute of optics and fine mechanics , chinese academy of sciences , measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in beijing global surface , giving a method of retrieving the aerosol optical depth ( aod ) and put up with primary results that exponential function can fit the retrieval results according to its visibility , putting forth different coefficients and functions on variable visibility , also giving a primary analysis on the aod in dust - storm day and some contrast between sun - day and dust - storm day , analyzing the ratio between scatter and total irradiance , and its relationship with atmosphere mass and total atmosphere optical depth , lastly contrasting with the survey results by aeronet beijing station , the results of retrieval is in reason , this work gives some help in researching the co - effect of aerosol - radiance - climate and makes preparation for further survey on the radiance characteristics of dust 利用中国科学院大气物理研究所与长春光学精密机械研究所合作研制的太阳?大气紫外光谱辐射计( sauvs ) ,测量到达北京地表的太阳直接和散射紫外光谱辐射,导出了大气气溶胶的光学厚度。初步结果表明:北京紫外波段大气气溶胶的光学厚度在绝大部分情况下随波长的增加而单调减小,用指数函数可以较好地拟合反演结果,统计得到了三个水平能见度状况下拟合函数的系数值和公式表达式;初步分析了扬沙、浮尘、沙尘暴天气条件下气溶胶光学厚度的特点,并与一般晴朗天气条件下的气溶胶光学厚度特点做了比较分析;分析了太阳紫外谱辐射中散射辐射与大气质量、大气总光学厚度的定性关系和定量表达式;最后与全球气溶胶监测网络( aeronet )北京站的资料做比对,表明反演结果基本合理。 | | 7. | 1 ) the number of sandstorm days from 12 weather stations in the helanshan zone is documented , indicating that the events can happen on the east and west sides of the ranges all the year round , with high frequencies in april to may , averaging 3 . 2 and 3 . 1 days on the west side , respectively and with the eastern high frequency in april , averaging 2 . 0 days . also , analysis reveals that the high frequency period for eastern station yanchi and western guaizihu is april , with 5 . 4 and 5 . 2 days , on average , respectively 银川、巴音浩特和通古淖尔三地背景大气沙尘气溶胶粒子的数浓度谱和质量浓度谱均呈单峰型,服从对数正态分布,与城市污染物气溶胶的三峰、双峰质量谱明显不同。浮尘、扬沙、沙尘暴天气条件下,平均数浓度和质量浓度是依次增加的,可相差4 - 7倍。沙尘气溶胶粒子谱分布还与地理位置有关。 | | 8. | To investigate the space / time distributions and occurrence and evolution of such events , the diffusion pattern over deserts , turbulent transfer features in sandstorm weather , the particle size distribution , mass concentration and its distribution , optic properties , chemical composition and physical factors responsible for the initiation of raising sands , we made integrative observation and sounding of sandstorms deep in the large - scale desert area , including tengri , badanjilin and maowusu , with the items consisting of micrometeorological measurement , 3d wind observation , data from kb - 120 and anderson samplers of mass concentrations of sands with their spectrum , the distribution of aerodynamic particle sizes from the aps3310a , retrieval of aerosols " optic depth from sunphotometer data , assay of the chemical composition by means of neutron activiation analysis ( naa ) and integrated study of all related factors for causing sandstorm to occur , based on the observations of all kinds 利用所取资料,系统分析了不同强度沙尘天气条件下沙尘气溶胶质量浓度和质量浓度谱、粒子谱分布、光学厚度、化学组分等特征;综合分析了影响沙尘起动的诸物理因子在沙尘起动中的作用;用沙尘输送模式对一次沙尘暴天气造成的泥雨过程的形成机制进行了模拟。历史气象资料统计分析表明,沙尘暴有其高发期( 4 、 5月)和高发时段( 14 - 20时) , 14时到20时之间发生的沙尘暴约占沙尘暴总次数的66 。扬沙和沙尘暴天气条件下,湍流动量通量和湍流感热通量都是重要的湍流交换,沙尘暴发生前近地层的超绝热不稳定对沙尘暴天气有加强作用。 | | 9. | According to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol , tsp and its particle size distribution , micrometeorology , and the solar spectroscopic radiation , even the neutron activation treatment of sand dust samples in helan mountainous area , the formation law of sandstrom , dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of helan mountain are counted and analysed 利用贺兰山地区沙尘暴历史资料和综合观测资料,对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒( tsp )及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理,分析了该地区浮尘、扬沙和沙尘暴形成规律,气候变化特征和贺兰山的影响。 |
- Similar Words:
- "扬森有限公司" English translation, "扬森制药有限公司" English translation, "扬砂泵" English translation, "扬砂管" English translation, "扬杀机;风选机" English translation, "扬沙泵" English translation, "扬沙峰顶" English translation, "扬山" English translation, "扬善惩恶" English translation, "扬绍" English translation
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