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heat low
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  热低压
     A PRELIMINARY RESEARCH OF THE RELATION BETWEEN COLD PROCESS IN GUANGDONG IN JANUARY-FEBRUARY AND AUSTRALIA SUMMER HEAT LOW
     澳大利亚热低压与广东1—2月冷害过程的初步探讨
短句来源
     While the significant increase of the vorticity on the left side of the jet flow is in favor of the rapid intensification of the heat low over the Arabian Peninsula and the lowering of the low-level geopotential height over the Arabian Sea, further more, the heating field with heating at upper levels and cooling at lower levels over the Arabian Sea also favors the lowering of the lower-level geopotential height.
     急流左侧强烈的涡度增长有利于阿拉伯半岛热低压迅速增强,同时也有利于其北侧的阿拉伯海对流层低层位势高度降低。 同时,阿拉伯海区域对流层出现高层增温、低层降温的加热场配置,也有利于对流层低层位势高度降低。
短句来源
     Omitting diabatic heating processes will result in the weakening of the Tibetan Heat Low, the cyclonic circulation and the convergence of the wind field, as well as the southwesterlies.
     忽略非绝热过程,会使青藏高原热低压大为减弱,风场的气旋性环流和辐合均大为减小,西南气流也被削弱。
短句来源
     This is a sandstorm weather that happened on zonal circulation and affected by heat low and surface cold front in west Mongolia.
     通过分析认为,这是一次发生于纬向环流中的沙尘暴天气,主要影响系统是蒙古西部热低压和地面冷锋。
短句来源
     The cause of formation of the gale and sandstorm in atumun-winter of 2000 in Gansu Corridor analysed by the weather and climate background,synoptics and dynamic diagnose. The result shows that several gale and sandstorm events occur on the advantaged dynamic and thermodynamic conditions of upper-air pattern adjusting from zonal circulation to meridional circulation on the 500hPa,west Siberian strong cold air rapidly moving southwardly and the heat low in Mongolia powerfully development.
     文中从天气气候背景及天气学、动力诊断等方面 ,分析 2 0 0 0年秋、冬季河西大风和沙尘暴天气的形成原因 ,分析结果表明 ,几次大风、沙尘暴过程都是在高空 5 0 0hPa环流形势由纬向环流向径向环流调整的过程中 ,西西伯利亚强冷空气沿西北气流迅速南下 ,在蒙古地面热低压强烈发展的有利的热力和动力条件下发生的。
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  “heat low”译为未确定词的双语例句
     At the same time the strengthened heat low over the ArabianPeninsula also leads to an eastward acceleration of the westerly, so the Indian summer monsoon onset starts on Pentad 31.4. The timing of the stepwise onset and advance of the Asian summer monsoon from 1979 to 2001 is identical to the result from the climatological analysis, indicating that the onset of the tropical eastern Indian Ocean acts as a very important role in onset process of the Asian summer monsoon.
     4.1979-2001各年亚洲夏季风的阶段性爆发时间的推进顺序与上述气候学研究结果基本一致,表明热带东印度洋夏季风的建立确实在整个亚洲夏季风建立进程中处于重要的地位。
短句来源
     The hard disk will be characterized by high precision, few heat, low dissipation, less noise and high cleanness, which cannot be realized through hard disks supported by other bearings.
     这样,硬盘就具有精度高、发热少、功耗低、噪声小和高洁净等其它轴承支承的硬盘无法企及的特点。
短句来源
     Microwave plasma thruster (MPT) is a space propulsion system that uses microwave to heat low molecular weight propellant gas to a high temperature.
     微波等离子体推力器(MPT)属于微波电热推进器。
短句来源
     It's extract is stable on heat, low inhibiting concentration and wide pH range on antimicrobe.
     芦荟汁还具有热稳定性强 ,抑菌浓度低 ,抑菌pH范围广的特点。
短句来源
     High early and late strength, small deviation, low hydration heat, low dry shrinkage, low impurities and harmful contents are the main required specifications of cement used for nuclear island and normal island concrete engineering in nuclear power station.
     核电站核岛和常规岛混凝土工程用水泥的特点是:要求早、后期强度高,标准偏差小,水化热低,干缩率低,杂质含量和有害成分含量少。
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  相似匹配句对
     On Low Heat Rejection Engines
     论低排热发动机
短句来源
     Low and N.
     Low和N .
短句来源
     The specific heat of polyaniline at low-temperature
     聚苯胺的低温比热研究
短句来源
     It is of low cost.
     此体系堵剂的材料费用较低。
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     On Stagnated Heat
     论瘀热
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  heat low
During May the pressure over a large part of the study area south of 40° N shows a significant correlation with its highest value in the heat low region over Pakistan.
      
These two favourite locations of the heat low are linked to the spatial distribution of surface albedo over West Africa that drives the spatio-temporal location of the surface temperature maxima.
      
This study suggests that such a phenomenon is associated with the shift of the Saharan heat low between two favourite positions: one being over the Sahelian area (10-15°N) and the other over the Saharan area (20-25°N).
      
Both the dry convection north of 15°N in the heat low (mainly in June-July) and deep convection in the ITCZ (in August-September) are modulated by the 3-5-day easterly waves over the land.
      
The pressure-gradient increases typically arise from pressure rises in the south preceding those in the north within the desert heat low.
      
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This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions...

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions of the structure and development of five frequently observed rain-bearing systems i.e. cold front, blocking high and cold vortex, monsoon heat low, warm front and typhoon.The last part consists of discussions of some points of view in synoptic meteorology in China. It is stated that the monsoon precipitation is various in intensity and duration according the large-scale flow patterns. The difference of moisture content in the middle troposphere as a criterion for the identification of equatorial or tropical maritime air mass is proved to be missleading. It is shown that the upper air moist content is high only within the raining region near the polar or equatorial front. To the south of the equatorial front within the so-called equatorial air mass, the moist content in the middle troposphere is as low as within the tropical maritime air mass. It is the convergence and lifting of the tropical air mass which releases the convective instability and induces the surface moist air rising to the middle troposphere. The phenomenon of the forward-inclination of the so-called North-West Trough based on the time cross-section of wind is proved to be a mistake by combining two systems into one trough. The terminology of shear line, and the correct application of synoptic models in weather analysis and forecas-ting are also discussed.

本文是一年来从事夏季降水天气初步普查的简单报告。第一节首先指出所用分析方法与一般国内所通用者,稍有不同。高空等压面分析,取20米作为等高缐间隔,2℃作为等温缐间隔。代替40米及5℃的间隔,以适应夏半年较弱的温度场与气压形势场,在剖面分析中以等假相当位温缐代替位温缐,与等温缐配合以适应降水天气的凝结降水过程。 第二节讨论了五种夏半年基本降水天气系统,即冷锋、阻塞高压与冷涡、季风热低压、 暖锋及有风的结构,并简单地叙述了演变过程。 第三节对某些天气概念提供一些批判性的讨论。根据现已增加的观测材料,论证季风与梅雨是多样性的,决定于大规模的温度场与流场特性,以高空湿度大小区分赤道气团与热带海洋气团,证明是不适当的,因为中国赤道锋降水区域以南,即在所谓南南季风的赤道气团中,中层大气仍是干燥的。降水区域内,中层对流层的大量水份,是由于辐合或抬升的作用,使潜势的对流不稳定性成为现实的不稳定性,而由下层空气上升带上去的。文中还论证了所谓西北槽槽缐前倾是将两个系统混作—个系统的不正确桔果。最后还讨论了切交缐及一般模型在天气分析预报中的应用与限制。

Daily data(0000GMT) of sea level pressures( Jan. -Feb.) from 1977 through 1986 in the north part of Australia are analyzed with EOF method. The Heat Low indexes are determined from the coefficient of the first eigenvector com -bining with daily data of 500hPa geopotential heights.It is interesting that there is a pronouneed correlation between the Heat Low and the severe cold damages in Guangdong. The forwer lasts about 5 days. There are eighteen Heat Low pro cesses in the twenty months. After each, a severe...

Daily data(0000GMT) of sea level pressures( Jan. -Feb.) from 1977 through 1986 in the north part of Australia are analyzed with EOF method. The Heat Low indexes are determined from the coefficient of the first eigenvector com -bining with daily data of 500hPa geopotential heights.It is interesting that there is a pronouneed correlation between the Heat Low and the severe cold damages in Guangdong. The forwer lasts about 5 days. There are eighteen Heat Low pro cesses in the twenty months. After each, a severe cold damage happened in Guangdong. The interval between the formation of the Heat Low(critical index below-2) and the beginning of the cold damage is about two weeks. The longer the heat low maintains the more the number of days in which Guangdong has cold temperature and prolonged rain.

本文在普查了1977—1986年1—2月澳大利亚地面至500hPa三层逐日资料的基础上,用自然正交函数展开,计算了海平面气压场资料。有趣地发现澳大利亚热低压一般可持续5天左右,并与广东的重大冷害过程有明显关系。热低压出现日到广东有冷害过程出现一般约相距1—2周左右,且热低压持续越久,广东低温阴雨日数也越多。

In this paper the finite difference methed and mean temperature methed are employed in calculating the temperature distribution, stered-up heat and dissipative surface heat of ictermitrent furnace wall. After calculating the one-layer, two-layer and three-layer walls it is shown that the stored-up heat calculated by mean temperatire methed is lower than that by finite difference methcd as the non-linear temperature distribution in furnace wall is not considered; the more the layers of...

In this paper the finite difference methed and mean temperature methed are employed in calculating the temperature distribution, stered-up heat and dissipative surface heat of ictermitrent furnace wall. After calculating the one-layer, two-layer and three-layer walls it is shown that the stored-up heat calculated by mean temperatire methed is lower than that by finite difference methcd as the non-linear temperature distribution in furnace wall is not considered; the more the layers of furnace wall, the nearer the two calculated results; there exists a optimum proportion among the thicknesses of multilayer furnace wall to make the heat loss ( including stcred-up heat and dissipative surface heat ) lowest.

本文利用有限差分法和平均温度法计算了间隙式炉炉墙的温度分布,蓄热量及表面散热量。用上述两种方法对一层、二层、三层炉墙进行的计算表明:按平均温度法计算的蓄热量,由于没有考虑到炉墙内温度分布的非线性,比有限差分法计算的蓄热量要低;炉墙层数越多,两种方法计算的结果越接近;多层炉墙的各层有一个最佳厚度比例,使热损失(包括蓄热量和表面散热量)最小。

 
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