查询词典 quasi-definite

In conclusion, by consideration of viscosity effect of material at propagating crack-tip, it is established in the paper the unified continuous singular crack-tip field in linear-hardening material under the condition of incompressibility. The plastic shock is eliminated that exists in non-viscosity solutions. What's more, the dynamic and quasi-static solutions are united together when the Mach number approaches zero.

总之，通过考虑扩展裂纹尖端材料的粘性效应，本文建立了幂硬化材料在不可压缩条件下扩展裂纹尖端的统一的连续奇异性场，消除了无粘性解中存在的塑性激波，在马赫数趋于零时动态解和准静态解得到了统一。

By Monte Carlo simulations, the effect of the dispersion of the quasi Gaussian size distribution on dynamic behavior of the system is investigated in the same inelasticity case.

随后，建立了粒径为分形分布的准一维颗粒气体的动力学模型，其中每个颗粒受高斯白噪声驱动，研究了系统稳态的动力学特性。

With an additional terminal cost in the standard finite horizon objective functional and a terminal inequality constraint,the prediction is expanding quasi to infinity but the control profile to be determined by on-line optimization is only of finite horizon.

开环优化问题含有附加的终端代价项和终端约束条件，这样预测时域延伸至准无限，而需在线优化获得的控制函数仅为有限时域。

We give a two-parameter penalty function and its exact penalty theorem for inequation constrain- ed optimization,meanwhile,We propose a quasi Newton algorithmfor solving the unconstrained nonlinear penalty problem and study its convergence,Numerical examples illustrate the feasibility of the algorithm.

对于含约束不等式的优化问题，构造双参数精确罚函数并给出精确罚定理，提出了一个求解这种罚函数问题的布鲁丹族拟牛顿算法，研究了算法的收敛性与收敛速度，并进行了数值试验，证明了可行性。

It has been prepared for the investigation of inexact quasi-newton method for operator equations in infinite dimensional space.

文献[1]对有限维空间中非线性方程组的不精确拟牛顿法的收敛性进行了研究，为无穷维空间上的算子方程的不精确拟牛顿法的研究作好了准备。

In the research of complex stochastic models, Quasi-Birth-and-Death processes whose level and phase are all infinite will take place frequently.

在复杂随机模型的研究中，经常会出现水平和位相都是无限的拟生灭过程，对这类过程，平稳分布的计算仍然是一个未很好解决的难题。

An inhomogeneous Benjamin-Davis-Ono-Burgers equation including topographic forcing and turbulent dissipation is derived in terms of the quasi-geostrophic vorticity equation, an approximate analytic solution of the BDO-Burgers equation with a small dissipation is obtained, the time variations of mass and energy of the algebraic solitary waves are discussed, and finally, the forced BDO-Burgers equation is integrated numerically and the numerical solutions are given for a given basic flow with a weak shear and a localized topographic forcing.

利用包括地形外源和湍流耗散的准地转涡度方程导出了包含强迫项和湍流耗散项的非齐次强迫BDO-Burgers方程，求出了小耗散存在情况下BDO-Burgers方程的近似解析解，讨论了代数孤立波的质量和能量的守恒关系，最后，对给定的弱切变基本气流和局地地形强迫，数值积分强迫BDO-Burgers方程，求得了不同参数下的数值解。

And in 1981, in "Raiders of the Lost Ark," that approach was so old-fashioned it looked new. In the 27 years since, practically every action filmmaker has tried to tap into the movie's quasi-mystical kinetic power: the pace had to be blindingly fast; the stunts insanely elaborate, the villainy extra-villainous; the hero's attitude blithe, insouciant, almost sociopathically cool.

1981年《法柜奇兵》的处理方式，就做得老派而历久弥新。27年来，实际上每一位动作片导演都尝试充分利用这部电影有点神秘的活动能量：速度必须快到令人眼花撩乱；特技动作必须疯狂复杂；为非作歹耍坏到不行；英雄的态度乐天、逍遥、酷到几乎反社会的程度。

There are millions of population migrations from the rural areas to the urban areas, but they are instable and quasi-urbanization.

虽然有数以千万计的的乡村—城市的流动人口，但不稳定，呈准城市化状态。

The finiteelements satisfied the integral condition are quasi-conforming element,generalized conforming element,and elements constructed by 2 set parametermethod,and they are equivalent in some sense,and all converge to constantstrain.

满足这种条件的有限元有拟协调元、广义协调元和双参数法构造的单元，在一定意义上它们是等价的，并都收敛到常应变。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。