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径向对流
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  radial convection
     Radial convection diffusion is the main process that takes place in the hot gas duct(HGD) of 10 MW high temperature gas cooled reactor(HTR 10).
     10MW高温气冷实验堆(HTR-10)热气导管内的流体热混合主要是径向对流扩散过程。
短句来源
     To improve the quality of the crystals, it is considered to modify the temperature field further, such as increasing the radial gradient and decreasing the vertical gradient, then the radial convection could be raised and the speed of crystallizing and growing could be slowed down.
     为了提高晶体质量,需进一步改进温场,如加大径向梯度、减小纵向梯度,从而有利于熔液径向对流,并降低结晶和生长速度。
短句来源
  “径向对流”译为未确定词的双语例句
     The studies of the radial-azimuthal instability of accretion disk with advection
     含径向对流吸积盘的径向-环向不稳定性研究
短句来源
     THE RADIAL-AZIMUTHAL INSTABILITY OF RADIATION-PRESSURE-DOMINATED ACCRETION DISK WITH ADVECTION
     含径向对流,辐射压为主的吸积盘的振荡不稳定性
短句来源
     The A system representsdilatation of the south hemisphere ,while the C system indicates contraction of the northhemisphere. The relationship between the circum-antarctic oceanic ridge and the C system isprobably assoriated with the longitudinal flow of the mantle.
     A系总体反映了南半球的膨胀,而C系代表了北半球的收缩,环南极洋脊和C系的相互关系可能与径向对流有关。
短句来源
     The radial azimuthal instability of accretion disk with advection is analysed. By using perturbation method,we get the dispersion equation.
     从流体力学方程组出发,用微扰法得出含径向对流吸积盘的径向-环向不稳定性的色散方程,并根据盘的不同结构研究了四种模的不稳定性质.
短句来源
     The asymmetrical structure enhances the movement of diametral convection compared with the symmetrical structure, and the mixing efficiency is increased.
     与对称Y型混合器相比,不对称Y型混合器中粉体的径向对流运动明显增强,从而有利于提高混合效率.
短句来源
  相似匹配句对
     Radial Bogis
     径向转向架
短句来源
     Plunge-cut gear-shaving process
     径向剃齿
短句来源
     THE RADIAL-AZIMUTHAL INSTABILITY OF RADIATION-PRESSURE-DOMINATED ACCRETION DISK WITH ADVECTION
     含径向对流,辐射压为主的吸积盘的振荡不稳定性
短句来源
     The studies of the radial-azimuthal instability of accretion disk with advection
     含径向对流吸积盘的径向-环向不稳定性研究
短句来源
     Determination of Cooling Curve at Convection
     对流冷却的测定
短句来源
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  radial convection
In [5] a study is made of the induction of a toroidal magnetic field from the dipole field of a rotating spherical mass under the influence of radial convection.
      
The influence of natural radial convection upon the transient behaviour of a cylindrical arc column
      
An analytical model is proposed which describes the general transient behaviour of a cylindrical arc column subjected to the influence of a self generated radial convection.
      
The model, in conjunction with data for real gases, yields a criterion for assessing the importance of radial convection in various transient arcs, and allows the influence of a variable diffusivity to be determined.
      
In addition, the steady state heat/mass flow equations with radial convection are solved in a fairly general form for spherical boundaries.
      
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Based on the comprehensive studies of the global sesmicity and active tectonics, the global seismotectonics is summarized with three great systems:(1)the circum-Pacific seismotectonicsystem of deep subduction(the P system);(2)the Atlantic seismotectonic system of mid-oceanic ridge rifts(the A system );and(3)the continental seismotectonic system of shear nets(the C system).There is important dynamic correlation between the distribution of these three systems on the earth’s surface and the deflection of the geoid...

Based on the comprehensive studies of the global sesmicity and active tectonics, the global seismotectonics is summarized with three great systems:(1)the circum-Pacific seismotectonicsystem of deep subduction(the P system);(2)the Atlantic seismotectonic system of mid-oceanic ridge rifts(the A system );and(3)the continental seismotectonic system of shear nets(the C system).There is important dynamic correlation between the distribution of these three systems on the earth’s surface and the deflection of the geoid relative to the ideal roatating ellipsoid.Comparative analyses are made for the three systems by using the data of tectonic deformation and earthquake mechanism. The A system is characterized by planar extensional fractures. The P system demonstraces obduction and overthrusting of the Atlantic(0°)hemisphere lithosphere to the Pacific(180°)hemisphere lithosphere. The A system representsdilatation of the south hemisphere ,while the C system indicates contraction of the northhemisphere. The relationship between the circum-antarctic oceanic ridge and the C system isprobably assoriated with the longitudinal flow of the mantle.

据全球地震活动和活动构造的综合研究,全球地震构造可归总为3个大系统:(1)环太平洋深俯冲地震构造系(P系);(2)以大西洋为代表的大洋中脊裂谷地震构造系(A系);(3)大陆剪切网络地震构造系(C系)。这3个系统与大地水准面相对于理想旋转椭球面的畸变之间有重要的动力学联系。用构造变形和地震机制资料对3大系统作对比分析。A系以面状伸展破裂为特征,P系与大西洋(0°)半球岩石圈相对于太平洋(180°)半球岩石圈的反俯冲或逆冲有密切关系。A系总体反映了南半球的膨胀,而C系代表了北半球的收缩,环南极洋脊和C系的相互关系可能与径向对流有关。

The mechanism and process of thermal mixing of fluid with different temperature in a straight pipe were studied, which has general significance in nuclear reactor thermohydraulic process. Radial convection diffusion is the main process that takes place in the hot gas duct(HGD) of 10 MW high temperature gas cooled reactor(HTR 10). Being expressed by spatial temperature difference distribution of mixing efficiency and using Reynolds similarity method, analytical solution of radial convection diffusion coefficient...

The mechanism and process of thermal mixing of fluid with different temperature in a straight pipe were studied, which has general significance in nuclear reactor thermohydraulic process. Radial convection diffusion is the main process that takes place in the hot gas duct(HGD) of 10 MW high temperature gas cooled reactor(HTR 10). Being expressed by spatial temperature difference distribution of mixing efficiency and using Reynolds similarity method, analytical solution of radial convection diffusion coefficient ε r of a point source flowing in a pipe is gained, and it is in good agreement with HGD mixing test data. The range of Reynolds number Re is (1.00 ̄3.50)×10 5, and ε r has a corresponding value range of (1.00~4.00) ×10 -3 m 2/s, the ratio between ε r and velocity u which indicates mixing efficiency changes lightly among Re range. The phenomena of Re making a slight difference of thermal mixing in the plenum and HGD of HTR 10 are explained in theory.

探讨了在核反应堆热工流体力学中具有普遍意义的不同温度流体达到热混合均匀状态的过程和机理。10MW高温气冷实验堆(HTR-10)热气导管内的流体热混合主要是径向对流扩散过程。用流体温度空间分布的方差表示混合效果,通过雷诺比拟方法求得在点热源下游流动流体的径向扩散系数解析解,与在模拟热气导管内的点热源下游流动流体的扩散混合实验的结果相符合。在雷诺数Re为(1.00~3.50)×105范围内,径向湍动系数εr的相应范围是(1.00~4.00)×10-3m2/s。反映混合效果的湍动系数与流速u之比εr/u随雷诺数Re变化不大,解释了在高温堆堆芯底部结构中Re对流体混合效果影响不大的现象。

The global structure of accretion disks is investigated in a unified scheme by applying a general radiative cooling formula which can be used in both the optically thick and thin regimes and also including the radial advective heat transport. Within the framework of a-viscosity models, we find that there are distinctive families of global solutions exist in dtherent ranges of disk radii. For low mass accretion rate. M, there are three families which are: optically thick and local radiative cooling, optically...

The global structure of accretion disks is investigated in a unified scheme by applying a general radiative cooling formula which can be used in both the optically thick and thin regimes and also including the radial advective heat transport. Within the framework of a-viscosity models, we find that there are distinctive families of global solutions exist in dtherent ranges of disk radii. For low mass accretion rate. M, there are three families which are: optically thick and local radiative cooling, optically thin and local cooling, and optically thin and advection cooling. These solutions extend a wide range of disk radii and do not cross with each other. However, for high M and large viscosity parameter, α, the two local cooling solutions cross with each other at radii R1 and R2. They form two families of solutions which ekist in regions R < R1 and R > R2 respectively. The gap between R1 and Ra increases as M increases, whereas the advection dominated solution ekists at all radii and is stable. For high M and small at on the other hand, the two optically thin solutions cross with each other at radii R3 and R4. The size of this region decreases as M increase; on the other hand, the optically thick and local cooling dominated solution ekists at all radii.

在考虑径向对流和不同光学厚度的基础上,我们采用一般的辐射致冷假设;在统一的框架内考察了吸积盘的整体结构.对α模型,我们发现在不同的盘区存在不同的整体结构.在吸积率较低时,存在三种类型解:光学厚的局部辐射致冷解;光学薄的局部致冷解;光学薄的对流致冷解.这些解在盘内较大范围内都存在且互不交叉.但在吸积率较高和粘滞系数较大时,两种局部致冷解会相互交叉,而对流为主的解在所有盘区都稳定存在.另一方面,在吸积率较高和粘滞系数较小时,两种光学薄解会相互交叉,而光学厚和局部致冷为主的解在所有盘区都存在.

 
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