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ice-phase
相关语句
  冰相
     Ice-phase particles appear earlier, and their concentrations and contents increased. Microphysical processes turn more active.
     在云体内部,云水迅速被消耗,冰相粒子出现时间提前,浓度和含量明显增加,各种冰相过程反应强烈。
短句来源
     The heavy rainfall IOP case of HUAMEX project during 23~24 May 1998 was simulated by using the non-hydrostatic meso-scale model MM5 (V2) with Reisner抯 explicit scheme for moist physical processes. Results show the distribution and evolution of super-cooled liquid water in cloud which is the main meteorological factor causing the aircraft icing, and its interaction with water vapor, ice-phase water (ice crystal, snow, graupel) and updraft flow.
     利用“海峡两岸及临近地区暴雨试验”(HUAMEX)加密观测资料和MM5湿物理显式方案模拟研究了1998.5.23~24自粤北移向南海海岸冷锋前对流云团中的云物理过程,给出了造成飞机积冰的直接气象因子-云中过冷水的空间分布和随时间演变及其与水汽、冰相(冰晶、霰、雪)、垂直气流的相互关系。
短句来源
     Ice-phase particles coexist with liquid water droplets near the 0℃ level.
     在零度层附近为冰相和液相(云、雨滴)混存区。
短句来源
     The results indicate that the precipitation belongs to cold-cloud precipitation; ice-phase particles were the main components in the cold clouds both before and after the front; and the distribution of water particles from top to bottom was ice crystals,snow,cloud water,graupel and rainwater.
     数值模拟结果显示,此次冷锋降水属于冷云降水过程,冷锋前后云中主要以冰相粒子为主,云中水质粒自上而下的空间分布依次为冰晶、雪、云水、霰、雨水。
短句来源
  冰相过程
     Ice-phase particles appear earlier, and their concentrations and contents increased. Microphysical processes turn more active.
     在云体内部,云水迅速被消耗,冰相粒子出现时间提前,浓度和含量明显增加,各种冰相过程反应强烈。
短句来源
  相似匹配句对
     Ice
     冰
短句来源
     Fire and Ice
     火与冰
短句来源
     ICE-MINUS
     减冰细菌
短句来源
     WAVE-ICE INTERACTION
     海冰与波浪的相互作用
短句来源
     When the phase(?)
     当相位角(?)
短句来源
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  ice-phase
However, ice-phase abundances are not yet available.
      
High-Resolution Non-Hydrostatic Simulations of Flash-Flood Episodes with Grid-Nesting and Ice-Phase Parameterization
      


A Cumulonimbus cloud with moderate intensity and a warm cloud base has been simulated by using a dual-parameter cumulonimbus cloud model in the rainy season in Fujian.It is shownthat the cloud precipitation process has two phases,the first one is a warm-rain process and thesecond with ice phase process.A series of numerical experiments of cloud seeding show that ice-seeding or large droplet seeding could enhance the precipitation in the second phase.The effect ofprecipitation enhancement is concerned with the...

A Cumulonimbus cloud with moderate intensity and a warm cloud base has been simulated by using a dual-parameter cumulonimbus cloud model in the rainy season in Fujian.It is shownthat the cloud precipitation process has two phases,the first one is a warm-rain process and thesecond with ice phase process.A series of numerical experiments of cloud seeding show that ice-seeding or large droplet seeding could enhance the precipitation in the second phase.The effect ofprecipitation enhancement is concerned with the seeding pattern,the maximum can reach 24% ofthe total precipitation.In this paper,the mechanism of precipitation enhancement is also dis-cussed.

本文用一维积雨云双参数模式模拟了福建雨季一块发展强度中等、云底较暖的积雨云自然降水过程,发现该云有两段降水:前段为暖云降水,后段有冰相过程参与。对这块云进行的一系列人工催化数值试验表明,一定方式的冷云催化或暖云催化能使后段降水增加,其效果同催化方式有关,最多可达总降水量的24%。文中对人工催化这类积雨云的增雨机制进行了讨论,得到了一些有益的启示。

Two ice crystal multiplication processes are parameterized in the compressible three-dimensional numerical cloud model described in part I of this study. The formation of secondary ice crystals by shattering of relatively large supercooled drops during freezing and Hallett-Mossop mechanism are explicitly considered, and the ice crystal concentration is modified . For isolated convective clouds with warm bases; the simulations show that the inclusion of ice multiplication processes causes insignificant modification...

Two ice crystal multiplication processes are parameterized in the compressible three-dimensional numerical cloud model described in part I of this study. The formation of secondary ice crystals by shattering of relatively large supercooled drops during freezing and Hallett-Mossop mechanism are explicitly considered, and the ice crystal concentration is modified . For isolated convective clouds with warm bases; the simulations show that the inclusion of ice multiplication processes causes insignificant modification on the cloud dynamics and macro-features , the simulated cloud only produces slightly more total ground precipitation whereas the maximum precipitation rate is increased and the appearing time of ice crystals is earlier. However, the processes do affect the microphysics of the cloud : They promote ice glaciation in clouds. As a result, more latent heat released warms the upper portion of the cloud and causes a higher cloud top. In the two multiplication processes, the shattering mechanism plays a dominant role in affecting on the cloud microphysics. The relative importance of each ice phase process is also analyzed .

在可压缩三维冷云数值模式里对冰晶繁生过程进行了参数化,显式考虑了过冷滴冻结破裂和Hallett-Mossop两个繁生机制,并对冰晶浓度进行了订正。对暖底孤立积云的模拟实例表明繁生作用对对流系统宏观特征没有显著改变,地面总降水略有增加,最大雨强增大且时间提前。繁生过程的主要作用是改变了云的微物理结构特征,使云中冰化时间提早,冰化程度大大加强,引起云上部增暖并抬高云顶。在所考虑的两个繁生机制中,冻结破裂繁生机制是引起微物理结构发生变化的主要过程。还对各冰相微物理过程的相对作用进行了分析。

An experiment to examine the vertical continuity of microphysical processes in relation to the supporting updrafts was conducted during the Florida Area Cumulus Experiment (FACE) in 1978. Three instrumented aircraft repeatedly penetrated individual cumulus near the - 5, - 10 and - 15℃ levels. Some successive penetrations with two aircraft on a single level were also made. The present study emphasizes the evolution of the ice phase near the - 5, - 10 and - 15℃ levels in relation to both cloud droplets and updrafts,...

An experiment to examine the vertical continuity of microphysical processes in relation to the supporting updrafts was conducted during the Florida Area Cumulus Experiment (FACE) in 1978. Three instrumented aircraft repeatedly penetrated individual cumulus near the - 5, - 10 and - 15℃ levels. Some successive penetrations with two aircraft on a single level were also made. The present study emphasizes the evolution of the ice phase near the - 5, - 10 and - 15℃ levels in relation to both cloud droplets and updrafts, in order to understand the "trigger" mechanism for rapid glaciation.

本文利用FACE(佛罗里达积云试验)1978年夏季积云飞机实测资料,对微物理过程的垂直连续性及其和上升气流的关系进行了研究。资料涉及三架带仪器的飞机分别在积云块的-5、-10、和-15℃层反复穿行两架飞机对单层高度连续穿行。本文着重研究这三层高度上与云滴、上升气流有关的冰相的发展,以便了解“触发”快速冰化的机理。

 
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