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  circulation center
     Using GMS infrared imagery we have summarized four cloud characteristics relative to the intensity of tropical cyclone as follows: the position of the circulation center relative to deep convective cloud;
     本文根据日本的地球静止卫星红外云图,概括了与热带气旋强度有关的四方面云图特征,即:环流中心与深对流密蔽云区的相对位置关系; 眼区的形状、大小和清晰程度;
短句来源
     According to the analysis on the genesis and development of 41 typhoons in West Pacific using the GMS cloud images for the period of 1978 to 1979, we found four types of cloud pattern depending on the position of the initial circulation center of disturbance relative to the deep convective cloud cluster.
     根据1978和1979两年中四十一个西太平洋台风发生发展的地球静止卫星云图分析,我们以扰动的环流中心和强对流密蔽云区之间的相对位置关系为依据,把它们的云型分为四类。
短句来源
     As a typhoon develops, the circulation center gradually moves into the cloud area from the periphery.
     在扰动的发展过程中,环流中心逐渐由云团之外进入云团内部。
短句来源
     The position of the circulation center relative to a deep convective cloud cluster is associated with the upper tropospheric environmental flow.
     这种环流中心与云团的相对位置关系和对流层上部的环境流场密切相关。
短句来源
     (4) After landfalling,affected by land topography,the speed of the largest circulation center in the lowerlevel was gradually slowed down and the maximum wind speed s radius also shrinked.
     台风登陆时,受到地形和山脉影响,最大风速半径及台风环流强度随时间的推延,低层最大环流中心移速减慢、最大风速半径开始缩小;
短句来源
  “环流中心”译为未确定词的双语例句
     Results show that: 1) the moving velocityof typhoon in west-east direction is negatively interrelated to the asymmetry in west-east andsouthwest-northeast direction at a distance of 100 km to 300 km away from typhoon center.
     结果表明:(1)距台风环流中心100~300km的东一西向和东北一西南向非对称程度与其东西向移速有稳定的强负相关,200~500km的东南一西北向非对称程度与其南北向移速有稳定的强正相关。
短句来源
     (2) in January an anticyclonic center forms in the region of Shanxi, Gansu and Ningxia to the northeast side of Tibetan Plateau and a convergent zone extends eastwards along 35°N in north part of Plateau and through the northeast edge of the Plateau and then goes southwards to the southeast corner of the Plateau, which may be caused by the dynamic effect of Plateau orography;
     (2)1月地面在高原东北侧陕甘宁地区形成反气旋环流中心和从高原北部35°N经高原东部边缘到高原东南角附近地面形成风向辐合线,可能主要受高原的动力影响所致。
短句来源
     In addition,the weakened East Asian summer monsoon at 850hPa,anomalous divergence center over the Qingzang Plateau,and cyclonic circulation anomaly over North Pacific are all well captured.
     850hPa减弱的夏季风、青藏高原辐散中心以及北太平洋上空的异常气旋性环流中心亦被较好地预报出来;
短句来源
     Its anticyclonic circulation cooperates well with the vorticity, divergence and the vertical motion.
     反气旋环流与涡度、散度及垂直运动有较好的配合。 在赤道反气旋的低层,环流中心为负涡度区和辐散区,并与下沉运动区相对应,四周为正涡度和辐合区,以及上升运动区。
短句来源
     (4) the easterly wave moves westward and mixed with the other synoptic system; (5) appropriate amount cold air invades. composition analysis of the physical field indicate that the vorticity on the cycle center at 500 hPa is almost a constant before and after TC into Beibu Gulf while the divergence at 200hPa and verticity at 500hPa and the moisture over the Indochina Peninsula at 850hPa increased.
     对物理量场的合成分析表明,TC进入北部湾前和进入北部湾后,环流中心附近500hPa涡度变化极小,200hPa高空散度增大,500hPa垂直上升速度增大,850hPa中南半岛水汽输送量增大。
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  相似匹配句对
     Where T(R) is the hypercenter of R; Z(R) is the center of R.
     Z(R)是R的中心
短句来源
     THE CENTER OF A CATEGORY
     范畴的中心
短句来源
     A Survey of Geographical Environment,Circulation Systems and the Central Fi-shing Grounds in the Huanghai Sea and East China Sea
     黄东海地理环境概况、环流系统与中心渔场
短句来源
     The reverse circulations in the center of the velocity field decrease and even disappear with increasing m.
     m增大流体中心逆向环流随之减小并最终消失。
短句来源
     The cold and warm circulation features in early spring in China are ana iysed .
     冷暖环流指标;
短句来源
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  circulation center
In a first step, summation of signals in the circulation center coming from both carotissinus areas was investigated in dogs, after the aortic nerves had been cut off.
      
At this point the storm begins to take on the familiar spiral appearance with increasing cyclonic wind flow around the low-level circulation center.
      
For example, the surface secondary low is located to the northwest of the CMR, while the surface circulation center is located to the southwest.
      
However, these parcels did rise with time as they approached the circulation center.
      
This MCS decayed but was followed another MCS that formed near the 700 hPa circulation center.
      
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Using GMS infrared imagery we have summarized four cloud characteristics relative to the intensity of tropical cyclone as follows: the position of the circulation center relative to deep convective cloud; the characteristics of the eye's form and its size and the degree of clearness in the eye; the characteristics of central deep convective cloud; and the characteristics of spiral cloud band. To each characteristic we assigned an index of tropical cyclone intensity. Synthesizing these four indices we obtained...

Using GMS infrared imagery we have summarized four cloud characteristics relative to the intensity of tropical cyclone as follows: the position of the circulation center relative to deep convective cloud; the characteristics of the eye's form and its size and the degree of clearness in the eye; the characteristics of central deep convective cloud; and the characteristics of spiral cloud band. To each characteristic we assigned an index of tropical cyclone intensity. Synthesizing these four indices we obtained a T number characterizing the intensity of the cyclone. We correlated the T number with the central maximum wind speed of tropical cyclone and obtained empirical formula Vmax = 7.813 (T -1). It is found that we can estimated the maximum wind speed of the tropical cyclone using the GMS data.

本文根据日本的地球静止卫星红外云图,概括了与热带气旋强度有关的四方面云图特征,即:环流中心与深对流密蔽云区的相对位置关系;眼区的形状、大小和清晰程度;中心深对流密蔽云区范围的大小和螺旋云带的特征。然后,把上述四个因素作为热带气旋强度的指数。综合这些因素,得到热带气旋的强度特征数T。由近100次观测得出热带气旋中心的最大风力V_(max)与T的相关曲线和描写它们的经验关系式V_(max)=7.813(T-1)(米/秒)。在仅有卫星观测的情况下,用上述关系可以估计热带气旋的强度。

According to the analysis on the genesis and development of 41 typhoons in West Pacific using the GMS cloud images for the period of 1978 to 1979, we found four types of cloud pattern depending on the position of the initial circulation center of disturbance relative to the deep convective cloud cluster. The initial circulation center may be at the northern, eastern, western of the cloud cluster or inside the cloud cluster. As a typhoon develops, the circulation center gradually moves into the cloud area from...

According to the analysis on the genesis and development of 41 typhoons in West Pacific using the GMS cloud images for the period of 1978 to 1979, we found four types of cloud pattern depending on the position of the initial circulation center of disturbance relative to the deep convective cloud cluster. The initial circulation center may be at the northern, eastern, western of the cloud cluster or inside the cloud cluster. As a typhoon develops, the circulation center gradually moves into the cloud area from the periphery. The position of the circulation center relative to a deep convective cloud cluster is associated with the upper tropospheric environmental flow. During the early developing stage the circulation center is usually at the upwind of the cloud cluster where the upper flow is divergent. The upper flow pattern favoring the development of typhoon is a result of some proper arrangement of tropical upper tropospheric trough (TUTT) and its cold vortices, the upper tropospheric anticyclone of the Tibetan Plateau and the equatorial buffer zone. Of these 3-systems the position of TUTT is the most important one.Finally, a detailed analysis was made for the genesis and development of typhoon No. 8 in 1979. There was an area of mesoscale convergence formed by the upper outflow of the cloud cluster and the environmental flow in the upwind. It was shown that the upper level convergence lead to forced subsidence and the corresponding dynamic heating was favorable for the development of the typhoon.

根据1978和1979两年中四十一个西太平洋台风发生发展的地球静止卫星云图分析,我们以扰动的环流中心和强对流密蔽云区之间的相对位置关系为依据,把它们的云型分为四类。即环流中心分别位于扰动云团的北侧、东侧、西侧和内部。在扰动的发展过程中,环流中心逐渐由云团之外进入云团内部。这种环流中心与云团的相对位置关系和对流层上部的环境流场密切相关。在扰动发展的初期,尽管不同类型的扰动与不同的高空环境流场相对应,但有一点却是共同的,即环流中心总是暴露在云团所处的高空盛行气流的上风方向一侧的大尺度气流辐散处。这种最有利于台风发生发展的高空形势,常常是向西延伸的大洋中部槽和槽中的冷涡、青藏高压、副热带高压和近赤道高压脊等行星尺度天气系统恰当配置的结果。其中大洋中部槽的作用尤其明显。 我们对1979年第八号台风的发生发展(7月28日)做了更进一步的分析。扰动云团的高空流出气流和环境气流在云团的上风方向形成中尺度辐合区。在绝热的假定下,这种高空辐合强迫下沉所产生的局地增温率可达1.4度·小时~(-1).这种增暖足以引起台风的发生。

In this paper the streamfields on 300m and 900m above the surface and 1500m 3000m,4000m,and 5000m levels above the sea level are calcu-ated with data about 100 aerological stations over the Plateau and its surroundings in January and July for 1959-1960.It shows:

本文用1959、1960年1月和7月青藏高原上及其附近100个站的高空资料作出了距地300米、900米、海拔1500米、3000米、4000米及5000米等六层平均风场图。研究指出: 1.1月自高原中部至云贵一带存在一条辐合带,其厚度约距地1000米。近地层的反气旋性环流中心不在蒙古人民共和国,而在高原东侧的大陆上。天山和祁连山分别对西风都有明显的分支作用。 2.7月在高原上的风向辐合更为明显,但和印度北部的内热带辐合带是截然分开的,它北部的反气旋性环流轴线在3000米以下,位于42°—43°N一带,到5000米南退到35°N附近,这与日常天气图上小高压活动的情况相符。 3.不论1月和7月风向的日变化都清楚,20时普遍有吹向高原的分风向,且在高原的边缘附近表现最为明显,不少站的风向日变化达到180°。

 
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