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出准
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     The mathematical expression of the relationship between degree of polarization(DOP)and differential group delay(DGD)for Gauss pulse is derived.
     理论推导出准单色光波情况下、输入信号为高斯脉冲时偏振度(DOP)与差分群延时(DGD)关系的简明解析表达式。
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     According to the experimental result and degradation rate to calculate,out power of QCW diode laser reach 91W and 1.16W/A of slope efficiency,the average lifetime is 2.19×10~9 shots at room temperature,when the operating current is 90A,10% duty-cycle(500Hz,200μs).
     根据试验结果得出退化率 ,推算出准连续二极管激光器在水温 2 0℃ ,电流 90A ,占空比为 10 % (5 0 0Hz,2 0 0 μs)时 ,平均激光工作寿命为 2 .19× 10 9次脉冲 ;
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     The fatigue fracture of test alloys has mixed-rupture characteristics of quasi-cleavage and dimples.
     合金的疲劳断口呈现出准解理与韧窝断裂的混合特征。
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     Observation from AZ91D Mg alloy fracture morphology indicates that it is composed of fatigue source zone,fatigue crack propagation zone and fatigue fracture zone,where the fatigue lines is not evident and fatigue fracture morphology is quasi-cleavage fracture.
     AZ91D合金的疲劳断口可以观察到3个典型区域:疲劳源区、疲劳裂纹扩展区和瞬断区。 疲劳裂纹扩展区的疲劳裂纹不明显,疲劳断口呈现出准解理断口的形貌。
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     Assuming a material to be an anisotropic aggregate of many tiny quasi- D_5 crystallites,we study elastic constitutive relation of quasi- D_5 crystals and then get the effective elastic stiffness tensor and the effective softness tensor for an anisotropic aggregate of quasi- D_5 crystallites under Voigt model and Reuss model,respectively.
     假设一材料是由大量的准D5晶粒集合而成(称为准多D5晶体),利用准D5晶粒的对称性研究D5晶粒弹性本构关系,然后基于Voigt模型和Reuss模型分别推导出准D5晶粒各向异性集合的有效弹性刚度张量和有效弹性柔度张量.
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     The equations in terms of quasi-coordinates are presented.
     给了该方的坐标表述.
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     PARTICLE QUASI-ELASTIC KNOCKOUT REACTION
     α粒子的弹性敲反应
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     To present that integral functional W。
     给了W。
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     In this paper,the proof of Theorem 1(ii) and Theorem 2(i) in M.M.
     给了M .
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     Matrix Over Quasi-Fields
     域上矩阵
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We also show how to distinguish examples of open subsets with a good quotient coming from Mumford's theory and give examples of open subsets with non-quasi-projective quotients.
      
This paper shows how the Kazhdan-Lusztig theory of cells can be directly applied to establish the quasi-heredity ofq-Schur algebras.
      
Fr?nsdal [Fr1, Fr2] made a penetrating observation that both of them are quasi-Hopf algebras, obtained by twisting the standard quantum affine algebraUq(g).
      
The case of some quasi-projective toric surfaces such as the affine plane are described by our method too.
      
Scales of quasi-norms are defined for the coefficients of the expansion that characterize, via Littlewood-Paley-Stein theory, when a radial distribution belongs to a Triebel-Lizorkin or Besov space.
      
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In this paper we have derived the fundamental solutions of the flow over semi-infinite angular wings with constant load, of which the side-edge is not parallel to the free stream. The feature of the solutions is that the vortices issued from the leeward side-edge go along this edge rather than in the direction of the free stream. With the help of these solutions, we can overcome the difficulties Dillenius and Nielson have experienced in using symmetrical subdivisions to construct the finite elements for sideslipping...

In this paper we have derived the fundamental solutions of the flow over semi-infinite angular wings with constant load, of which the side-edge is not parallel to the free stream. The feature of the solutions is that the vortices issued from the leeward side-edge go along this edge rather than in the direction of the free stream. With the help of these solutions, we can overcome the difficulties Dillenius and Nielson have experienced in using symmetrical subdivisions to construct the finite elements for sideslipping wings, and extend Woodward method, so that it is applicable to wings with small angles of sideslip for subsonic and supersonic speeds. The problem is divided into symmetrical and asymmetrical parts, thus allowing a great saving of computer storage and operation time. Besides, a quasi-similar rule is derived from the governing equation or directly from the numerical method. The results obtained are in good agreement with those obtained by the exact theory and other methods.

本文推导出侧缘与自由流不平行的常值面涡半无限角翼基本解,其特征是从面涡小块背风侧缘拖出的涡不是顺着自由流,而是沿着侧缘拖出,从而克服了用Woodward方法计算侧滑翼绕流中使用对称分划小块的困难,提出了适用于从亚音速直到超音速范围的推广的Woodward方法。本方法将问题分解为若干个对称与反对称问题,大大地节省了计算机内存量或计算时间。本文还从基本方程,或者直接从数值计算方法出发,推导出准相似律。计算结果与精确解以及和其他方法的结果符合得很好。

In this paper we have derived the fundamental solutions of the flow over semi-infinite angular wings with constant load, of which the side-edge is not parallel to the free stream. The feafure of the solutions is that the vortices issued from the leeward side-edge go along this edge rather than in the direction of the free stream. With the help of these solutions, we can overcome the difficulties Dillenius and Nielson have experienced and use symmetrical subdivisions to construct the finite elements for sideslipping...

In this paper we have derived the fundamental solutions of the flow over semi-infinite angular wings with constant load, of which the side-edge is not parallel to the free stream. The feafure of the solutions is that the vortices issued from the leeward side-edge go along this edge rather than in the direction of the free stream. With the help of these solutions, we can overcome the difficulties Dillenius and Nielson have experienced and use symmetrical subdivisions to construct the finite elements for sideslipping wings, extending Woodward method so that it is applicable to wings with small angles of sideslip and covers subsonic and supersonic speeds. By this method, problems are divided into symmetrical and asymmetrical parts, thus allowing a great saving of computer storage and time Besides, a quasi-similar rule is derived from the governing equation or directly from the numerical method. Tin results obtained are in good agreement with those obtained by the exact theory and other methods.

本文推导出侧缘与自由流不平行的常值面涡半无限角翼基本解,其特征是从面涡小块背风侧缘拖出的涡不是顺着自由流,而是沿着侧缘拖出,从而克服了用Woobward方法计算侧滑翼绕流中使用对称分划小块的困难,提出了适用于从亚音速直到超音速范围的推广的Woodward方法。本方法将问题分解为若干个对称与反对称问题,大大地节省了计算机内存量或计算时间。本文还从基本方程,或者直接从数值计算方法出发,推导出准相似律。计算结果与精确解以及和其他方法的结果符合得很好。

In this paper, the consistent density wave theory for both the galactic gaseous shock and linear stellar density wave is studied. The steady, two-dimensional equations coupled with the Poisson equation are solved in the case of hydrodynamie model, a quasi-stable, tightly wound, two-arms consistent solution is obtained for both linear stellar density wave and galactic gaseous shock. The results show that the consistent solution is convergent if incomplete hydrodynamie linear equations together with the global...

In this paper, the consistent density wave theory for both the galactic gaseous shock and linear stellar density wave is studied. The steady, two-dimensional equations coupled with the Poisson equation are solved in the case of hydrodynamie model, a quasi-stable, tightly wound, two-arms consistent solution is obtained for both linear stellar density wave and galactic gaseous shock. The results show that the consistent solution is convergent if incomplete hydrodynamie linear equations together with the global equation of gravity are used. Such kind of solutions gives the similar dispersion relation as the local one in asymptotic approximation and the distribution of total density and gravity in non-harmonic form. However, the stellar linear density wave will be unstable if the complete hydrodynamie linear equations are used.

本文从二维气体动力学和泊松方程出发,研究星际气体激波和线性恒星密度波自洽的密度波理论,求出准稳、紧卷、双臂的线性恒星密度波和星际气体激波的总合自洽解。所得结果表明,在采用不完全的流体力学线性方程组及全局的引力方程的条件下,得到的是收敛的自洽解,该解给出了与局部渐近解相同的色散关系、非谐波形式的总密度分布及总引力分布,所得结果还表明,若采用完全的流体力学线性化方程组,将得出不稳定的线性恒星密度波。

 
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