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平均自由
相关语句
  mean free
    A RIGOROUS PROOF OF THE GEOMETRICAL MEAN FREE PATH λ′
    关于几何学平均自由程λ′的严格证明
短句来源
    TEMPERATURE DEPENDENT OPTICAL POTENTIAL AND MEAN FREE PATHS OF NUCLEONS
    与温度有关的核子光学势及平均自由
短句来源
    The Transport Equation for photons Diffusion Approximation and Rosseiand Mean Free Path
    光子的输运方程、扩散近似与Rosseland平均自由
短句来源
    STUDY ON THE RELATIONS OF PROPERTIES AND MEAN FREE PATH OF PCBN
    聚晶立方氮化硼(PCBN)性能与平均自由程关系的研究
短句来源
    Tait mean free path in probability view
    用概率知识推导Tait平均自由
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  “平均自由”译为未确定词的双语例句
    A Research on Formula between collision Frequency of Gas Molecule and Average Free Procedure
    气体分子碰撞频率和平均自由程公式的严格推导
短句来源
    The deduction of average free path of mixed gas molecules
    混合气体分子平均自由程的推证
短句来源
    In the third part, on the base of predecessor' s experiment data and theory, we expatiate on the phenomenon of the amplifying spontaneously of light, and through analyzing the experiment data, we show that the transition from the amplifying spontaneously radiating to laser radiating is a gradual one.
    在第三章中,基于前人得出的实验数据和理论,本文详细叙述了光的自发放大现象,并通过对实验数据的分析,说明了放大自发辐射(ASE)到激光辐射的转变过程是一个逐渐变化的过程,Cao.H根据实验结果得出:这种转变发生在当散射平均自由程从14λ降至于5λ的过程当中。
短句来源
    The average free path of this molecule is equal to the rate of its average speed to average collision frequency.
    而该种分子的平均自由程等于它的平均速率与平均碰撞频率之比.
短句来源
    DATA PROCESSING METHOD IN MEASURING THE MEAN-FREE-PATH OF NUCLEAR INTERACTIONS
    核作用平均自由程测量中的数据处理
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  mean free
The diffusion deposition of submicron aerosol particles of a finite size on a model filter composed of parallel ultrafine fibers with a radius comparable with the mean free path of air molecules was considered.
      
The parameters of the grid (channel) cells and the over-all geometrical dimensions of the grid are considered smaller than the mean free path of the molecules.
      
We assume that the Debye length is much greater than the mean free path length of the charged particles.
      
At distances from the wall exceeding the length of the mean free path of a molecule the Navier-Stokes equations for the mixture are valid.
      
In the layer next to the wall, whose thickness is of the order of the mean free path of a molecule, it is necessary to solve the Boltzmann equation and to match the solutions at the boundary of the external and internal regions.
      
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We describe in this paper an experiment using a cloud chamber in a magnetic field of 6200 gauss to determine the average total cross-section of the direct production of electron pairs in aluminium by high energy electrons generated in cascade showers and having energies larger than 30 Mev. We have found after correcting for the spurious events 8.1 electron tridents, which were produced actually by electrons. This figure corresponds to a mean free path of 672±585 cm. or an average total cross-section of (0.25±...

We describe in this paper an experiment using a cloud chamber in a magnetic field of 6200 gauss to determine the average total cross-section of the direct production of electron pairs in aluminium by high energy electrons generated in cascade showers and having energies larger than 30 Mev. We have found after correcting for the spurious events 8.1 electron tridents, which were produced actually by electrons. This figure corresponds to a mean free path of 672±585 cm. or an average total cross-section of (0.25± 0.22) X 10-25 cm2, for trident production. In the treatment of data, the elimination of spurious tridents has been appropriately considered. The formulas of the total cross-section derived by Bhabha[8] and by Murota et al[11] have been applied in accordance with our experimental conditions to compute the total cross-section. Finally, comparison between the theoretical and experimental values has been made. Our experiment is in fair agreement with the theory of Murota et al. While not in contradiction with that of Bhabha.

本文叙述利用场强为6200高斯的磁云室,对级联簇射中的能量大于30兆电子伏的电子在铝中直接产生电子对的平均总截面进行了测量。实验上总共找到真正由电子产生的电子三岔8.1个,相应于三岔产生的平均自由路程为672±585厘米或平均总截面为(0.25±0.22)×10~(-25)厘米~2。在数据处理中,对假三岔数目的除去作了应有的适当考虑。此外对Bhabha及Murota等的总截面公式也作了适合于于我们实验具体情况的修正,并算出总截面值,最后将它同实验值作了比较。结果我们认为实验上测得的值和Murota等的总截面值较为接近,但也不与Bhabha的截面值矛盾。

In this paper, the theory developed in previous paper[2] is extended to a thin superconducting film containing impurities. The critical magnetic field for the second order phase transition of the superconducting alloy film has been obtained. The results obtained are reduced to those of the Ginzburg-Landau theory when 2d 》ξ0 with arbitrary l or 2d《ξ0 with l 《 2d, but are different when 2d<ξ0 with l>2d, l being the mean free path of the electrons. The theory agrees with Blumberg's experiment.

本文把文献[2]的理论推广到含有杂质的超导薄膜情形,得出合金薄膜的二极相变临界磁场。本文得到的结果,在2dξ_0而l任意时,或者2dξ_0而l2d时,趋于Гинэбург-Ландау理论;在2d<ξ_0 而l>2d时,与Гинэбург-Ландау理论不同(l是杂质所决定的电子平均自由程)。理论符合Blumbers实验。

In this work we report experimental studies of the critical magnetic field for indium films of different thicknesses alloyed with 2 at.% and 3 at.% of tin, thus furnishing, for the first time, experimental data of Hc ~ d for the case of finite electronic mean free path. From these data, it is concluded that the critical magnetic field of thin films can only be discussed in the light of the non-local, nonlinear theories, and that in the thin film limit, He∞ d-3/2 for both pure and alloyed films. The local theories...

In this work we report experimental studies of the critical magnetic field for indium films of different thicknesses alloyed with 2 at.% and 3 at.% of tin, thus furnishing, for the first time, experimental data of Hc ~ d for the case of finite electronic mean free path. From these data, it is concluded that the critical magnetic field of thin films can only be discussed in the light of the non-local, nonlinear theories, and that in the thin film limit, He∞ d-3/2 for both pure and alloyed films. The local theories of london and of Гинзбург-ланлау, and the non-local, linear theory of Ittner, are inapplicable. The erroneous conclusion of Hc∞ d-1 made by certain outhors, is due to their incorrect analyses of their experimental data.

本文对In+2%Sn,In+3%Sn的不同厚度合金膜的临界场Hc进行了研究,从实验上第一次提供了电子平均自由程l≠∞时的Hc~d的数据。这些实验结果表明,关于超导膜临界场问题只能用非线性非定域理论描述,在薄膜极限下,不论纯膜或合金膜,Hc∝d~(-3/2);定域的London,Г-Л理论和线性非定域的Ittner理论皆不适用。一部分文献中给出Hc∝d~(-1)的结论,是由于那些作者分析实验结果的方法不恰当所致。

 
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