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diffusion of
相关语句
  扩散
    STOCHASTIC DIFFUSION OF TRANSIT PARTICLES DRIVEN BY A SINGLE WAVE
    单波驱动飞行粒子随机扩散
短句来源
    MECHANISM FOR ANOMALOUSLY FAST DIFFUSION OF SOLUTE ATOMS IN HCP CRYSTALS
    HCP晶体中溶质原子异常快速扩散现象的机制
短句来源
    Effects of Crystal Quality on Minority Carrier Diffusion of MBE-GaAs/Si Material
    MBE-GaAs/Si材料晶体质量对少子扩散长度的影响
短句来源
    Diffusion of deuterium in titanium
    氘在钛中的扩散行为
短句来源
    The Elementary Study on Diffusion of Gravity Separation of Various Compositions in the Upper Atmosphere
    高层大气各组份重力分离扩散过程的初步研究
短句来源
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  中扩散
    According to the theory of the rate process of diffusion of atoms in lattice, the kinetics of long-range ordering and short-range ordering under the condition of zero long-range order in the nearest neighbour approximation has been investigated.
    由原子在点阵中扩散的反应率过程理论,在最近邻近似下,计算了AB合金的长程有序化动力学及长程序为零时的短程有序化动力学。
短句来源
  “diffusion of”译为未确定词的双语例句
    SIMPLIFIED ELASTIC DIPOLE MODEL OF NONLINEAR STRESS-INDUCED DIFFUSION OF INTERSTITIALS
    间隙原子非线性应力感生扩散的简化弹性偶极子模型
短句来源
    Diffusion of C_(60) in Porous Silica Glass and its Optical Limiting Effect
    C_(60)在微孔玻璃中的渗透及光限制效应的研究
短句来源
    And with increasing Al_2O_3 interlayer thickness,the reflectivity of Ag fihn increased firstly and then decreased. On the other hand,introducing Al_2O_3 and Cr interlayers,the Ag grains are refined and the(111)texture of Ag film are weakened due to the diffusion of aluminum and Cr atoms to the growth face,thus resulting in the decrease of reflectivity of Ag film.
    而且,随着Al_2O_3厚度的增加,Ag膜的反射率先增大后减小.XRD与AES测试表明,引入Al_2O_3或Cr可明显细化Ag晶粒,减弱Ag膜(111)织构;
短句来源
    Theory Study on Diffusion of Boron Atom Empty Place Complex
    硼原子-空位复合体扩散的理论研究
短句来源
    The workability of NbTi50/Cu superconductor is effected by the brittle compound layer of Cu-Ti formed by the mutual diffusion of Cu and Ti during the working processes.
    NbTi50/Cu的加工性能受加工过程中由Cu和Ti的互扩散形成的脆性Cu-Ti化合物所影响.
短句来源
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  diffusion of
One DR peak associated with the short-distance diffusion of oxygen vacancies was observed in both temperature and frequency spectra.
      
The method of NMR spin echo with the magnetic field pulse gradient was used for studying self-diffusion of water molecules in the radial root direction.
      
Diffusion of an Organic Cation into Root Cell Walls
      
Nonspecific pore-forming proteins (porins) are the major proteins of the outer membrane of Gram-negative bacteria responsible for diffusion of low-molecular-weight compounds.
      
Furthermore, these inhibitors not only reduce the local tissue damage but also retard the easy diffusion of systemic toxins and hence increase survival time.
      
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Equations determining the velocity and density distributions within the mixing region of two incompressible gases with different densities are set up, their temperatures being assumed to be the same. For incompressible mixing the total number of gas molecules per unit volume is constant, although the density of the gaseous mixture varies from point to point due to diffusion of matter. As an illustration we consider the plane jet and steady motion. The boundary layer method of approximation can still be...

Equations determining the velocity and density distributions within the mixing region of two incompressible gases with different densities are set up, their temperatures being assumed to be the same. For incompressible mixing the total number of gas molecules per unit volume is constant, although the density of the gaseous mixture varies from point to point due to diffusion of matter. As an illustration we consider the plane jet and steady motion. The boundary layer method of approximation can still be applied. The boundary of the jet is shown to be the same as that for one fluid. The solution of the problem then depends upon the numerical value of the coefticient of viscosity of the mixture which is a function of the number of molecules of each constituent gas in the unit volume. The present method of investigation is applicable to the cylindrical and half jets and also to the case where the two gases are at different temperatures.

本文求出规定二不能压缩气体的分片合流运动时,速度与质量密度分布的微分方程式。假定两种气体的密度不同但温度则相等。不能压缩的定义是每单位体积中的两种气体分子数的和不变。本文只讨论一平面守恒注中所需要的微分方程式。粘滞流体运动中之边界近似法仍可应用。同样方法亦可用到守恒圆柱体注,半注及气体中温度不同诸问题。

It is well-known that the stress-induced rotation of the magnetic domains in nickel gives rise to an internal friction peak (when internal friction is plotted as a function of temperature of measurement). An internal friction peak associated with the presence of carbon in nickel was recently observed in our laboratory. In this paper are described further experiments which demonstrate conclusively that this new internal friction peak is not connected with ferromagnetism of nickel but depends upon the amount of...

It is well-known that the stress-induced rotation of the magnetic domains in nickel gives rise to an internal friction peak (when internal friction is plotted as a function of temperature of measurement). An internal friction peak associated with the presence of carbon in nickel was recently observed in our laboratory. In this paper are described further experiments which demonstrate conclusively that this new internal friction peak is not connected with ferromagnetism of nickel but depends upon the amount of carbon in solid solution in nickel. More accurate determinations of the activation energy associated with this internal friction peak show that this activation energy is indeed very close to the activation energy for the diffusion of carbon in nickel. These experiments thus show that the new internal friction peak is associated with the stress-induced micro-diffusion of carbon in nickel.

镍中磁畴在应力作用下的转动可以引起一个内耗峰(当内耗表示为温度的函数时),是众所周知的现象。最近在我们的实验室中发现镍中含碳可以引起内耗峰。本文叙述进一步的实验,确切证明这个新内耗峰与镍的磁性无关,而与镍中固溶体所含的溶解碳量有关。关于激活能的较精确测量指出:与这个内耗峰相联系的激活能确与碳在镍中扩散的激活能很相近。这些实验说明这个新内耗峰是由于碳在镍中的应力感生微扩散而起的。 简单地讨论了这个内耗峰的机构,认为可能与镍的晶体点阵中的空穴有关。

It is now well-established that stress-induced micro-diffusion of carbon atoms in the interstitial lattice points will take place in body-centred cubic lattices such as in α-iron. This is the result of the lattice asymmetry introduced by an oscillating strain in the crystal. In a pure face-centred cubic metal, this phenomenon could not happen, namely, not in -γ-iron. Nevertheless experimental evidences show to the contrary.

在面心立方体金属中间隙原子一般不发生内耗。只有在合金元素(杂质)或空穴周围的间隙原子才会发生微扩散的内耗。因为空穴或合金原子的存在破坏了邻近间隙位置的对称性,在这样位置上的间隙原子才有可能在往复应力作用下发生应力感生微扩散内耗。 本文按以上所述两种情况,利用作者之一所作的内耗热力学理论作计算,发现由于合金原子存在而引起的内耗弛豫强度应该与x_A(1—x_A)·C成正比,x_A是合金原子浓度,C是间隙原子浓度。由于空穴存在而引起的内耗强度应与N·1/(B/C~2+1/C)成正比,此处N是空穴的浓度,C是间隙原子浓度,B是一常数。在葛庭隧、钱知强两氏对面心立方系锰钢的内耗强度的实验中,内耗强度的数值基本上与合金原子浓度无关。因此,在高锰合金钢中像是空穴所引起内耗的那种机构。同时,可以估计出碳原子落入空穴放出的能量约为0.14eV。但目前实验数据有限,实际上面心合金钢中是何种机构在起主要作用,尚待进一步研究。

 
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