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近似结果
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  approximate results
     Comparison with other approximate results and acoustical methods are made.
     本文结果也和其它近似结果并和声学试验法的结果比较过.
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     The comparison wim some other approximate results is also given.
     本文也对已有的近似结果作了比较。
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     For the deflection of multi-span and multi-story frame under horizontal or virtical load,the symmetrical three diagonal matrix,also can be used to get approximate results.
     对多跨多层刚架在竖向荷载或在水平荷载作用下的位移、内力计算,也可用三对角阵形式的总刚得到近似结果
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     permutations of n keys occur with equal probability we propose an analysis to exactly evaluate both of these problems and compare to the approximate results obtained so far.
     个排列以等概率出现的假定,我们提出对这两个开放问题的分析并与现存的近似结果进行比较
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     CA(coherent approximation) method can provide better approximate results when the differential physical effect of P i(t) is considered.
     当考虑到占有几率Pi(t)的微分效应时 ,相干近似方法能够提供更好的近似结果 .
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  “近似结果”译为未确定词的双语例句
     The indirect coupling effect has been analyzed, comparing with the results of distorted wave approximation, it is found that the coupling effect is less important for 2s-2p transition, but for 2s-3s and 2s-3p transition it should be taken into account.
     与扭曲波近似结果比较可以看出,对于共振型2s-2p跃迁耦合效应不是很重要,但对2s-3s和2s-3p跃迁耦合效应是相当重要的。
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     For transition 1s 22s 2 S 1s 12p 2 P o, the result in this paper is a little smaller than that of the close coupling approximation and a little larger than that of Coulomb Born exchange approximation,and accords with that of the experiment except that nearer excitation threshold.
     对于1s2s2S-1s2p2Po跃迁,结果介于密耦方法和Coulomb-Born交换近似结果之间,而且除了紧靠近激发阈值的能量区域外与实验结果符合
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     The Green function method and the average T-matrix approximation are used.
     计算中用了格林函数方法和平均T-矩阵近似,结果表明:(I)在Cu衬底上淀积Ni薄层,化学吸附加强;
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     The approximate result and error estimate totally identical to those with the generalized numerical integral method of single node can be got by means of Gauss-Jacobi quadrature.
     Gauss-Jacobi求积方法在应用中可得到与广义单节点数值积分公式完全相同的近似结果及误差估计。
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     The computational results are in accord with the results of plane wave Born Approximation.
     计算结果与平面波玻恩近似结果符合得较好
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  相似匹配句对
     The result demonstrated that decoction Caiyu can improve the liver function.
     结果:
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     3.Clinlic Outcome: 26 patients obtained endoscopic cervical discectomy and interbody fusionResults:
     结果
短句来源
     APPROXIMATE DISTRIBUTION OF x~m(n)
     x~m(n)的近似分布
短句来源
     Characteristics of Approximate Limit
     近似极限的特征
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     New Approximation Algorithm of Travelling Salesperson Problem
     货郎担问题的近似算法
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  approximate results
The approximate results are in good agreement with the exact numerical solutions.
      
An exact solution is constructed for the self-consistent problem of transverse oscillations of a cold annular beam in a magnetic field, and a comparison is made with approximate results from the method of envelope equations.
      
In general, the early approximate results [1] are confirmed.
      
For spherically symmetric potentials the problem can be solved exactly whereas for anisotropic potentials approximate results are obtained with the help of a variational principle.
      
The Anderson lattice model is studied via time ordered perturbation theory in order to derive approximate results for dynamical susceptibility and electrical conductivity in the Kondo regime.
      
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The so-called "truss rigid frames" are those rigid frames with trusses as their horizontal beams, of which the two ends are rigidly connected to columns. Within the author's knowledge, all the methods available at present for analyzing such rigid frames are based on Certain special assumptions such as (1) that the positions of the points of contra-flexure in all the columns are previously known; (2) that the end rotations of a truss may be reprensented by that of its assumed line of axis as in the case of an...

The so-called "truss rigid frames" are those rigid frames with trusses as their horizontal beams, of which the two ends are rigidly connected to columns. Within the author's knowledge, all the methods available at present for analyzing such rigid frames are based on Certain special assumptions such as (1) that the positions of the points of contra-flexure in all the columns are previously known; (2) that the end rotations of a truss may be reprensented by that of its assumed line of axis as in the case of an ordinary beam; or (3) that the end verticals of trusses may be given certain prescribed deformations. Of course, the adoption of any of such assumptions leads to only approximate results inconsistent with the actual deformations of such rigid frames under any loading. Heretofore, the author did not know any correct method for analyzing such rigid frames. In this paper, the author presents two principles of the correct analysis of truss rigid frames. The first principle is that of "moment action on column" for computing the angle change constants of columns, and the second principle is that of "effect of span-change in truss" for computing the angle and span change constants of trusses.As, for computing the angle change constants of a truss, the dummy unit moment is a couple applied to its end verticals, so, for computing the angle change constants of a column, the dummy unit moment must also be a couple applied to the section of column rigidly connected to the end of a truss, in order to effect a consistent deformation at the joint of the two. This is the first principle.A truss just like a curved or gabled beam of which the effect of span-change can not be neglected, so truss rigid frames belong to the same category of what may be called "span-change" rigid frames such as rigid frames with curved or gabled beams. Therefore the span-change constants of trusses should be included besides their angle-change constants for analyzing truss rigid frames. This is the second principle.With the constants of columns and trusses are all computed in accordance with respectively the first and second principles mentioned above, truss rigid frames may be analyzed by any method including the effect of span-change as in the case of rigid frames with curved or gabled beams, and the results thus obtained will be exactly the same as by the method of least work or deflections without any special assumptions.In this paper, after the two principles are described and the formulas for computing the constants of columns and trusses are derived, the correctness of the two principles are then proved by the methods of least work, deflections and slope-deflection. A two-span truss rigid frame is analyzed under the following three conditions:Ⅰ. Applying both of the two principles to obtain the correct results.Ⅱ. Applying only the first principle to show the discrepancies of neglecting the effect of span-change in trusses as born out by comparing the results of Ⅱ with Ⅰ.Ⅲ. Applying neither of the two principles, and the truss rigid frames being analyzed by the special assumption (2) mentioned above with the line of axis at the bottom chord of truss, in order to show the discrepancies of neglecting the moment action on column as born out by comparing the results of Ⅲ with Ⅱ. For the sake of brevity, only the results are given in Tables 1 to 5 without computations in details.Although the discrepancies of neglecting the moment acticn on column are only slight as shown by comparing the results of Ⅲ with Ⅱ in Tables 2, 4 and 5, there is no reason why special assumptions should not be replaced by the correct principle of moment action on column to obtain correct results. As shown by comparing the results of Ⅱ with Ⅰ in Tables 2, 4 and 5, the discrepancies by neglecting the span change in trusses are generally considerable and, in certain particular part, as large as 3000%. Therefore, for the safe and economical design of truss rigid frames, the effect of span-change in trusses should not be neglected in their analysis.Finally, for analyzing co

所謂“桁架剛構”即以桁架為横梁与柱相剛接之剛構。現下採用分析剛構之任一方法,以分析此項剛構时,均須採用種種特殊之假定而得近似之結果。據著者所知,中外書刊中似尚无此項剛構之正確分析法。於本文中,著者發表关於桁架剛構正確分析之兩項原理,即柱頂力矩作用与桁架跨变影響之兩项原理。前項原理使柱頂段之角夔与桁架端豎桿相同,以符合柱与桁架剛接处之連续性。後項原理指出桁架与曲梁(即拱)及折梁(即山墙式梁)相同係一種“跨变横梁”,故桁架刚構亦与拱式及山墙式剛構相同,係一種“跨变剛構”。若根據此兩项原理,分别计算柱与桁架兩端的撓曲常数,再用分析跨变刚構之任一分析法以分析此項刚構,則所得之枯果,与不作任何特殊假定用最少功法或变位法所得者完全相同。本文先說明此兩项原理及根據此兩項原理计算柱与桁架撓曲常數之方法。次取一最簡單之桁架刚構为例,證明此丙項原理之正確性。桁架刚構既与拱式及山墙式刚構同属於跨变刚構一類型,分析後者之任何方法均可用以分析前者,本文无須贅述。但取一兩跨之桁架刚構為例,列举所得之正確結果,与用近似法所得者相比较,藉以顯出近似法有相當巨大之差誤。關於階形之複式桁架刚構之分析,本文用“代替桁架”之辦法,但只說明其原則,不...

所謂“桁架剛構”即以桁架為横梁与柱相剛接之剛構。現下採用分析剛構之任一方法,以分析此項剛構时,均須採用種種特殊之假定而得近似之結果。據著者所知,中外書刊中似尚无此項剛構之正確分析法。於本文中,著者發表关於桁架剛構正確分析之兩項原理,即柱頂力矩作用与桁架跨变影響之兩项原理。前項原理使柱頂段之角夔与桁架端豎桿相同,以符合柱与桁架剛接处之連续性。後項原理指出桁架与曲梁(即拱)及折梁(即山墙式梁)相同係一種“跨变横梁”,故桁架刚構亦与拱式及山墙式剛構相同,係一種“跨变剛構”。若根據此兩项原理,分别计算柱与桁架兩端的撓曲常数,再用分析跨变刚構之任一分析法以分析此項刚構,則所得之枯果,与不作任何特殊假定用最少功法或变位法所得者完全相同。本文先說明此兩项原理及根據此兩項原理计算柱与桁架撓曲常數之方法。次取一最簡單之桁架刚構为例,證明此丙項原理之正確性。桁架刚構既与拱式及山墙式刚構同属於跨变刚構一類型,分析後者之任何方法均可用以分析前者,本文无須贅述。但取一兩跨之桁架刚構為例,列举所得之正確結果,与用近似法所得者相比较,藉以顯出近似法有相當巨大之差誤。關於階形之複式桁架刚構之分析,本文用“代替桁架”之辦法,但只說明其原則,不列出公式及算例。

In this paper Wang's generalization of Bethe's theory of superlattices is applied to the case of a binary alloy AB in a body-centred cubic lattice. Only neighbour interaction is taken into consideration. All the calculations are carried out to the second approximation.

本文把王氏理论应用到体心立方晶AB型二元合金超点阵问题;讨论它的平衡态性质,如秩序度与温度的关系,比热的性质,临界温度等;采取近邻作用假设及二级近似。计算结果较布拉格-威廉近似为佳,而与倍脱一级近似结果则相差不多。至于与有关β-黄铜实验结果的比较,定量的符合还较差;特别是在临界温度附近(T

The neutron distribution in an infinite medium around an infinitely long black cylinder is investigated. The medium satisfies the conditions typical for Milne's problems.

本文探讨当一无限长黑圆柱放在一满足密恩问题中诸条件的无限介质中时,介质中的中子分布。 计算采用球谐函数展开法,把中子分布函数对球谐函数展开,保留展开式的起首若干项,从而求得近似解。具体计算作到P_5近似为止。 表2及附图示各次近似中对於圆柱半径α的不同值求出的外推长度λ之值。作为长度单位的是中子在介质中的平均自由路程l。 为比较起见,我们在图中也画出了达维逊(Davison)给出的曲线(曲线D)。他的曲线是根据α《1及α》1二极限情形下派耳斯(Peierls)积分方程的近似解,中间参照P_3近似的结果画出的。由图可见,α大时P_5近似的结果已很接近於曲线D,而在α=1附近,则曲线D似乎远应该略低一些,才更符合曲线P_5的趋势(例如,像图中虚线所表示的那样)。

 
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