查询词典 numerical method

The direct numerical integration method was applied to obtain the steady state response of mechanisms with elastic links.

这不失为一种直接获得弹性连杆机构动态响应和机构真实运动轨迹的迅捷方法。

The paper also investigates the direct numerical integration method to calculate the reliability of struacture and develops a computer program.

并对直接积分法在系统可靠度计算中的应用进行了研究，编制了相应的分析程序。

Prony's method and direct numerical methods are presented for designing IIR filters according to time-domain specifications.

Prony方法和数值计算方法是直接提交设计IIR滤波器根据时域规格。

The problem of how the coherent structures in the wall region of a turbulent boundary layer could be excited by the disturbances from the outer region was investigated by using direct numerical simulation method.

应用直接数值模拟的方法，研究了湍流边界层近壁区由于外区扰动的作用而导致相干结构产生的问题·结果表明：在湍流边界层近壁区的上边界存在的速度扰动，可以在近壁区内激发出相干结构，从而完善了单个相干结构的理论模型

The direct numerical simulation method was applied to an industrial scale entrained flow coal gasification radiant syngas cooler to simulate three-dimensional multiphase flow field and temperature field.

通过直接数值模拟的方法对实际气流床煤气化辐射废锅内三维多相流流场和温度场进行了模拟。

By using the method of direct numerical simulation, the coherent structures in the wall region of a turbulent boundary layer with either steady or changing pressure gradients were studied.

采用共振三波的一个周期作为湍流边界层近壁区相干结构的初值，用直接数值模拟方法对有压力梯度，包括定常压力梯度和变压力梯度作用下相干结构的演化进行了研究，得出其各种特性的变化与实验观测到的结果一致。

The variation regularity of joint size and the shear strength of fractal rock joints with different fractal dimensions were subsequently studied by using the numerical direct shear test method.

为了研究岩石节理抗剪强度参数取值中的尺寸效应问题，采用随机分形方法，重构了岩石节理剖面线，在此基础上，应用数值直剪试验方法，研究了不同分维值岩石分形节理抗剪强度参数随节理尺寸的变化规律。

Using the directional derivative formula, the governing equation is discreted in the physical domain in which a nonorthogonal grid system is used. Two kinds of AF2 schemes, i. e. AF2-plane relaxation and full implicit AF2, for the TSD equation are proposed. Numerical results show that the full implicit AF2 scheme converges faster than AF2plane relaxation scheme. For the rectangular wing and swept wing, the results of the present method are compared with FP results, and the agreement is good.

采用适合于梯形机翼和后掠机翼的斜网格，利用方向导数公式直接在物理空间对主管方程进行离散；将近似因式分解方法应用于绕机翼的跨音速小扰动势流问题，提出AF2—面松弛和AF2全隐式两种迭代格式，并对它们的收敛速度进行比较，结果表明后者明显快于前者；直机翼和后掠机翼的算例表明，本文方法的结果与精确势流方法的结果吻合良好。

Fin ally, some numerical results to validate this method are presented for partial d ifferential equations with Dirichlet boundary condition.

最后 ，我们给出一些数值结果以验证这种针对 Dirichlet边界条件的偏微分程解法。

The authors studied carefully two numerical differential methods, finite difference method and rational polynomial technique, and pointed that FDM is the special ease of RPT when the limit state function is linear. Accordingly, FDM3 can be used for the continuous linear limit state function and RPT5 for the continuous nonlinear limit state function. For the discontinuous limit state function, RPT should be used because of the large error of FDM.

对于可靠度分析中常用的有限差分法及有理多项式法这两种数值微分方法，本文详细研究了二者间的异同及其求导结果与步长的关系，指出了对于相同的步长控制系数及取样方式，FDM是RPT在线性情况下的特例；对于连续的线性功能函数，可直接用3点FDM求导；对于连续的非线性功能函数，可用5点RPT求导；对于非连续的功能函数，应采用RPT求导。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。