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在端点
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  the end points
     Bézier curve is required to interpolate the end points of given curve segment with GC 1 continuity. One-sided approximation error is given and the choice of optimal interpolation points is studied, the optimal error estimate is obtained.
     用三次 Bézier曲线逼近双曲线段 ,在端点保持 GC1 插值 ,给出单边逼近的误差 ,并进行最优插值点的选择 ,得到最优的误差估计 ;
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  “在端点”译为未确定词的双语例句
     Gbrga2 and Gbrga8 were also mapped to linkage group A03 at 59.2cM from the start point and is 1.7cM and 8.6cM away from Unig26B04E5D(22D) and Gate4DB08bE3D(14D) marker, respectively.
     在连锁群A03中与pAR111E3C标记共同定位在端点,同时定位在Unig26B04E5D(22D)标记下游1.7cM处和Gate4DB08bE3D(14D)标记上游8.6cM处。
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     Gaussian quadrature formula with weight function Wμ(x) = xμe-x(μ> 1)is discussed in the case of the multiplicity more than 1 at the end point x=0 . Especially, an explicit Gauss-Laguerre quadrature formula is given with the multiplicity 2 at the end point for Laguerre weight function W(x) = e~x .
     本文对[0,∞]上的权函数W_μ(x)=x~μe~(-x)(μ>-1)讨论了在端点x=0重数>1情形下的Gauss型求积公式. 特别地,对Laguerre权函数W(x)=e~(-x).
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     LaFe 1- x Cr x O 3 systematic compounds were prepared by Cr 3+ doping into the end component LaFeO 3. The crystal constants have been evaluated by using MarqX code.
     我们在端点化合物LaFeO3中掺入Cr3+,制备了LaFe1-xCrxO3体系的系列样品。
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     The nonlinear Neumann boundary value problems -u{″}+Mu=a(t)f(u)+b(t)g(u),u′(0)=u′(1)=0 are studied, where a,b are allowed to be singular at both end points t=0 and t=1,and f,g are both superlinear(sublinear). The existence of at least one positive solutions to this problem is shown.
     分别在 f ,g同超 (次 )线性情形下 ,研究了非线性Neumann边值问题 -u″ +Mu =a(t) f(u) +b(t)g(u) ,u′(0 ) =u′(1) =0正解的存在性 ,其中a ,b在端点可以具有奇性
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     Amounting RS232/CAN converters on every device,linking all the converters by twisted wire and setting matching resistances at the endpoints,that is the way to construct a network. In the station intelligent self-regulated system of CTC,this kind of intelligent RS232/CAN converter is used to build the communication network.
     在各设备处安装RS232/CAN智能转换器,通过双绞线连接,并在端点处安装匹配电阻即可组成RS232/CAN通信网络。
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  相似匹配句对
     Extreme Points in Orlicz Spaces
     Orlicz空间的端点
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     C~*-Extreme Points in W~*-Algebras
     W~*-代数中的C~*-端点
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     Analysis on the Reflection Phenomenon of waves at the String Terminal
     波弦线端点反射现象的分析
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     Application of End Point Detection in Embedded Voice Dialer
     端点检测嵌入式声控拨号器中的应用
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  the end points
For a purely discrete measuredσ, it is shown that the systemE does not form an unconditional basis of subspaces inL2(-a, a) if at least one of the end points ±a is mass-free.
      
In contrast with open-ended wires, where the unknown current must vanish at the end points, periodic boundary conditions are required.
      
The main trends of the phase coexistence behaviour, namely the starting and the end points, are explained by the model as a function of system size.
      
The series exhibits a Gibbs phenomenon near the end points of discontinuity when f1(±1) ≠ 0.
      
The end points with all the dyes, specially with di-SNADNS and nitroso-SNADNS are very sharp and distinct.
      
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In the design of dam spillways,emphasis has usually been put on smooth continuous flow boundaries which means curve with gradual change of slope, and the effect due to sudden change of curvature has not been taken into account. A common practice is to adopt circular, elliptic, parabolic, or other arcs as transition curves, and abrupt change of curvature can not be avoided at points of tangency. In this paper, two types of curves with gradually varied curvature are suggested as transition between straight boundaries...

In the design of dam spillways,emphasis has usually been put on smooth continuous flow boundaries which means curve with gradual change of slope, and the effect due to sudden change of curvature has not been taken into account. A common practice is to adopt circular, elliptic, parabolic, or other arcs as transition curves, and abrupt change of curvature can not be avoided at points of tangency. In this paper, two types of curves with gradually varied curvature are suggested as transition between straight boundaries in spillway design. Numerical solution of the flow by finite element method indicates that the pressure distribution can be greatly improved. Besides, the equations of the curves contain sufficient parameters to fulfill design requirements

水利水电工程中溢流面体型的设计是很重要的,设计不良可能引起水流发生空化而导致空蚀。工程中的空蚀破坏事例并不少见。多年来国内外常用的溢流面曲线有圆弧、椭圆弧、抛物线弧等。由于这些曲线在端点处曲率不为零,和直线连接时将引起压强突变。本文中建议了两种多参数曲率缓变曲线,可以分别在两端或一端和直线相接,端点的位置和切线的坡度可以预先给定。曲线方程的形式简单,便于应用。在其他工程中也可应用曲率缓变曲线,或用曲率改变的方法来控制压强分布。

In studying the fracture of multi-phase materials and the structures composed of bonded dissimilar solids, special attention must be paid to the two classes of imperfections: one is the geometric discontinuities which may be idealized as cracks, and the other the material inhomogeneities which may be idealized as inclusions. In both cases the tips or ends of the defects are points of stress singularity and, consequently, sources of potential crack initiation and propagation. On this account, the problem of an...

In studying the fracture of multi-phase materials and the structures composed of bonded dissimilar solids, special attention must be paid to the two classes of imperfections: one is the geometric discontinuities which may be idealized as cracks, and the other the material inhomogeneities which may be idealized as inclusions. In both cases the tips or ends of the defects are points of stress singularity and, consequently, sources of potential crack initiation and propagation. On this account, the problem of an elastic plane containing a crack and an arbitrarily oriented flat inclusion is considered in this paper. In the formulation of the problem, the Green's functions for a pair of dislocations and a pair of concentrated body forces are utilized to generate the crack and the inclusion respectively. By using the integral equations technique, the stress singularity powers at the tip or end and the intersection point of the crack and the inclusion are defined. Based on this, the formulas of calculating the stress intensity factors at the crack tip and the inclusion end are obtained.

本文应用奇异积分方程法研究裂纹与一类线型扁平夹杂相互干涉的弹性力学平面问题。将裂纹与夹杂非相交情况推广到在端点以任意角度相交情况。一对位错和一对集中力的格林函数分别被用以形成裂纹和夹杂。通过对所得奇异积分方程组的奇异性分析,确定了裂纹与夹杂在端点以任意角度相交时端点和交点处的应力奇异性指数。最后导出了裂纹与夹杂尖端应力强度因子的计算公式并进行了一些数值计算。结果表明本文的方法对于处理类似的奇异性问题是非常有效的。

By using ab initio and analytic energy gradients method, 43 opttrized electronic states in 11 geometric condgurations of AlCn and AlCn+n=1~3 series are obtained at UHF (RHF)/3-21G level, their singles and doubles CI (CISD) energies are also obtained. 26 optndzed electronic states in 7 geometric coafigurations of AlC4 and AlC4+are obtained at UHF (RHF)/3-21G. In the point of energy, among those 69 configurations studied of AlC. and AlCn+ series, the most stable are of linear structures, and all the Al atoms are...

By using ab initio and analytic energy gradients method, 43 opttrized electronic states in 11 geometric condgurations of AlCn and AlCn+n=1~3 series are obtained at UHF (RHF)/3-21G level, their singles and doubles CI (CISD) energies are also obtained. 26 optndzed electronic states in 7 geometric coafigurations of AlC4 and AlC4+are obtained at UHF (RHF)/3-21G. In the point of energy, among those 69 configurations studied of AlC. and AlCn+ series, the most stable are of linear structures, and all the Al atoms are in the terminal. For AlC, AlC+, AlC2, AlC2+, AlC3, AlC3+ AlC4 and AlC4+, the most stable structures are AlC, AlC+, AlCC, AlCC+ , AlCCC, AlCCC+, AlCCCC and AlCCCC+ respectively. These results are consistent with theoretical and experimental results reported in references. In addition, harmonic vibrational analysises are performd on the most stable states of AlC. and AlCn+ n=1~4 series, namely AlC, AlCC, AlCCC,AlCCCC, AlC+, AlCC+, AlCCC+, AlCCCC+ by numerical method. Their fragmentation chanels, fragmentation energies and average binding energies are also investigated.

用abinitio能量解析梯度法,在UHF(RHF)/3-21G水平上优化得到AlCn,AlCn+(n=1~3)的四十三个构型,在RHF(UHF)/3-21G水平上优化得到AlC4,AlC4+的二十六个构型,CISD能量.从能量角度所研究的AlCn,AlCn+(n=1~4)构型中,最稳定的构型均是线性构型,且Al全都在端点上,同文献报导的理论和实验结果相一致.此外,还研究了原子簇的离子化能,原子平均结合能以及原子簇的碎片化通道和碎片化能,并计算了上述最稳定构型的谐振动光谱常数.

 
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