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弱对流
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  weak convection
     Weak convection occurs sometimes in nighttime with maximum reflectivity of about 20 dBz.
     此外,在晚上也有弱对流,最大反射率约为20 dBz。
短句来源
     A Diagnostic Analysis of a Local Heavy Rainfall Event in Weak Convection Condition
     一次弱对流引发局地特大暴雨天气的诊断分析
短句来源
     A local heavy rainfall event in Ningshan, Shaanxi Province on 28-29 August 2003 is diagnosed. The results show that the event occurred in a weak convection condition with convergence at high and low-level against strong convection.
     对2003年8月28~29日宁陕特大暴雨过程诊断分析结果表明:特大暴雨发生在低层辐合、高层辐合,不利于强对流发展的弱对流环境中。
短句来源
  “弱对流”译为未确定词的双语例句
     , symmetric stability is the possible mechanism of meso- 0 -scale system. Over the convectively unstable area, baroclinic item of moist potential vorticity (mpv2) is the dominant factor.
     对称不稳定可能是中β尺度系统发生发展的一种重要机制,在中β尺度系统发生的弱对流不稳定区,湿位涡的斜压项mpv2起了主导作用。
短句来源
     In this paper,Rossby wave-CISK near the equator is investigated according to the wind-pressure field balance relation. It is found that Rossby wave-CISK modes not only propagate in the west-east direction,but also in the north-south direction for the weak cumulus convective heating and the modes are a kind of decayed waves;
     本文根据低纬热带大气中的风压场平衡关系对CISK-Rossby波进行了研究,指出对于弱对流加热,CISK-Rossby波既可以向东西方向传播,又可以向南北方向传播,并且这种弱对流加热所激发的CISK-Rossby波是一种稳定的减幅波;
短句来源
     Study on marginal strutural planes and sections in combination with Wilson cycles, plate movement history, crustal structure, etc.
     根据板缘构造平、剖面特点,结合威尔逊旋回、板块运动史、地壳结构等分析,大陆仰冲板块是在克服属弱对流系一方的洋板块的抵抗,迫使贝尼奥夫带不断向洋退却过程中向前推进.
短句来源
     Results show that average location of subtropical ridge in 1998 is in the south of secular average position, summer monsoon is stronger with long time strong convection activity in South China and Yangtze River Basins,weak summer monsoon and convection in North China.
     结果指出 ,1 998年夏季副高脊线的平均位置偏南 ,华南地区和长江流域的夏季风较强 ,强对流维持时间长 ; 华北地区的夏季风较弱 ,对流比常年偏弱 ;
短句来源
     the stability conditions of the front zone turn into the moist neutral above 900 hPa from the weak convective unstable under 900 hPa;
     锋区90 0hPa以下是一个大气弱对流不稳定区 ,向上气层变为潮湿中性直至 40 0hPa ,等θse线基本上呈垂直分布 ;
短句来源
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  相似匹配句对
     The weakest convective instability is at the occluded stages of cyclone.
     气旋锢囚期对流不稳定最
短句来源
     (weak)in width.
     宽()。
短句来源
     sorokiniana in different growing time of wheat.
     sorokiniana
短句来源
     APPLICATION OF NARROW-BAND ECHO IN SEVERE WEATHER PREDICTION AND ANALYSIS
     窄带回波在分析和预报强对流天气中的应用
短句来源
     A STATISTICAL THEORY OF THE NON-LOCAL CONVECTION
     非局部的对流理论
短句来源
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  weak convection
The results of an experimental check are presented for the visualization of weak convection air flows near a heated body.
      
Rainfall that occurs during days without low OLR (weak convection with warm cloud tops or isolated deep convection) contributes to 69% of the total rainfall during dry sequences and 45% during wet sequences.
      
Very weak convection of the reaction suspensions in microgravity is another important factor.
      
It is shown that a weak convection region forms near the ingot top in the liquid zone at a certain stage of solidification and then develops downward gradually, and the negative segregation is detected in the weak convection region.
      
A curious pulsing of the precipitation is seen, indicating either drifting moisture anomalies or weak convection.
      
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Convection and constitution variation of liquid metal during solidifi-

采用凝固过程和对流条件与碳钢相似的NH_4Cl水溶液模拟实验,研究了铸锭凝固过程中的对流及液相区的成分变化。染色液示踪的结果表明,dρ_L/dT_L>0的溶液凝固过程中,侧向凝固的两相区中液相向上流动,并自上部流入液相区后,浮在液相区的上部形成一个弱对流区(第Ⅲ对流区)。随着来自两相区液相的不断补充,该区向下扩展。成分分析发现,第Ⅲ对流区内NH_4Cl浓度低于原液相区。向溶液中加入Na_2SO_4或NaI·2H_2O可以平衡两相区内液相密度的变化,抑制两相区的流动和第Ⅲ对流区的形成,从而消除液相区上部的低NH_4Cl区。

In this paper,Rossby wave-CISK near the equator is investigated according to the wind-pressure field balance relation. It is found that Rossby wave-CISK modes not only propagate in the west-east direction,but also in the north-south direction for the weak cumulus convective heating and the modes are a kind of decayed waves; For the strong convective heating,Rossby wave-CISK modes propagate slowly eastward and northward respectively , which characters are in a good agreement with the properties of 30-60 day Low...

In this paper,Rossby wave-CISK near the equator is investigated according to the wind-pressure field balance relation. It is found that Rossby wave-CISK modes not only propagate in the west-east direction,but also in the north-south direction for the weak cumulus convective heating and the modes are a kind of decayed waves; For the strong convective heating,Rossby wave-CISK modes propagate slowly eastward and northward respectively , which characters are in a good agreement with the properties of 30-60 day Low frequency oscillations. This shows that Rossby wove-CISK may be a possible mechanism for exciting 30-60 low frequency oscillations in the tropical atmosphere.

本文根据低纬热带大气中的风压场平衡关系对CISK-Rossby波进行了研究,指出对于弱对流加热,CISK-Rossby波既可以向东西方向传播,又可以向南北方向传播,并且这种弱对流加热所激发的CISK-Rossby波是一种稳定的减幅波;对于强对流加热,这种CISK-Rossby波减速并向东和向北传播,其传播特征与30~60天低频振荡的特征比较一致,并且这种CISK-Rossby波又是一种不稳定的增幅波,在10°N和17°N地区,经向波长为6000km的CISK-Rossby波的e倍增幅时间分别为6天和8天。因此,CISK-Rossby波可能是30~60天低频振荡的触发机制。

There are two original viewpoints, obduction and subduction, in the development history of plate tectonics theory. It is difficult to explain the subduction of mid-oceanic ridge, marginal plate structuras, inner-plate deformation and oceanic trench structures by the plate subduction theory. But the plate obduction theory considers that convergent boundary is located along intersecting zone of two convection systems moving to each other. Study on marginal strutural planes and sections in combination with Wilson...

There are two original viewpoints, obduction and subduction, in the development history of plate tectonics theory. It is difficult to explain the subduction of mid-oceanic ridge, marginal plate structuras, inner-plate deformation and oceanic trench structures by the plate subduction theory. But the plate obduction theory considers that convergent boundary is located along intersecting zone of two convection systems moving to each other. Study on marginal strutural planes and sections in combination with Wilson cycles, plate movement history, crustal structure, etc. , shows that continental obduction plate advances towards ocean by overcoming oceanic plate of the weaker convection system and forcing Benioff zone to withdraw continuously, which results in the deformation of marginal and inner plate structures. Hence, the author proposes an intermittent obduction model instead of the traditional continual subduction model The author also analyzes the conditions of inner - plate deformation and common deformation types by using plate obduction viewpoint, and tries to use inner - plate obduction to explain the Caledonian structures in South China and discover the mystery of Qinzhou geosyncline.

板块学说发展史上存在着造山作用的仰冲和俯冲两种成因观点。俯冲说难以解释中脊俯冲、板缘构造、板内变形及海沟构造。仰冲说认为板块会聚边缘处在两个相向运动着的对流系交会带。根据板缘构造平、剖面特点,结合威尔逊旋回、板块运动史、地壳结构等分析,大陆仰冲板块是在克服属弱对流系一方的洋板块的抵抗,迫使贝尼奥夫带不断向洋退却过程中向前推进.而造成各种板缘和板内构造的变形机制的。据此,提出一个断续仰冲模式以代替传统的连续俯冲模式。用仰冲观点分析了形成板内变形的内、外条件和常见的变形型式。还试用板内仰冲作用来解释华南加里东期构造特点与钦州地槽之谜。

 
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