Considering a kind of neutral delay differential equations, a sufficient condition for the oscillation of all solutions of neutral delay differential equation in critical state is obtained.
讨论了一类中立型时滞微分方程所有解的振动性，获得了临界状态下该方程所有解振动的一个充分条件。
Further, by making use of indetermined form appearing in the deflection equation, we can find out the formula for calculating the critical force.
再利用出现在挠度方程中的不定型式，我们可以找出计算临界力的公式。
This paper deals with the existence and nonexistence of solutions for a critical semilinear polyharmonic equation with the second boundary and with a non-negative perturbation.
讨论了带非负扰动并具有第二类边值的临界非齐次多重调和方程的多解存在性和非存在性。
A new state equation with only three parameters is proposed. The expressions for correlating the parameters with the critical properties of the fluid and the temperature are derived.
本文提出了一个新的三参数流体状态方程，并给出了三个参数与流体临界性质及温度之间的关系式。
This paper deals with the existence and nonexistence of solutions for a critical semilinear polyharmonic equation with a non-negative perturbation.
讨论了带非负扰动的临界非齐次多重调和方程多解存在性和非存在性。
By solving its stability different ial equation using Kayleighs quotient, the critical load calculation method for this type of paling acted on combined load was proposed.
应用瑞利商求解其倾覆稳定微分方程，给出了组合荷载作用时栅条稳定临界荷载计算方法。
For neutron matter with M-S interaction, the critical density of the ferromagnetic transition, the equation of state and the neutron star models are calculated.
还计算了在M - S势作用下的中子物质出现铁磁相变的临界密度、含有铁磁相变的物态方程及中子星模型。
The supplementary restraint equation at the compression wave front is obtained by use of the second critical condition.
由第二个临界条件导出压缩波前的屈曲变形约束方程。
Further study on this basic phase-variation equation results in the variation equation of the critical temperature of double hexagonal prism superconducting network in foreign field.
由此方程出发，计算了双层六角棱柱超导网络的临界温度随外磁场的变化关系。
Coupling the Bernoulli's equation and critical tractive stress theory, a critical hydraulic gradient model based on critical velocity is developed.
结合伯努里方程和临界牵引力理论，得到了基于临界速度的临界水力梯度公式；
In this paper, the rationality of the multigroup approximation of the control critical eigenvalue equation for the slab geometry is studied.
研究了板几何控制临界本征方程多群逼近的合理性。
Some sufficient conditions for the existence of periodic solutions of the equation are obtained by using the theory of critical point in functional.
再利用泛函的临界点理论，得到了方程具有周期解的充分条件。
By assuming impedance values of the coupling points, the critical speeds of the rotor subsystem can be determined from its frequency equation.
将弹性支承轴系分为转子子系统与支承子系统，假定在交联点处的位移阻抗值，则可由频率方程序确定转子子系统的临界转速。
Based on the stability of differential equation, a concept of critical wind was introduced to estimate the stability of galloping.
以偏微分方程稳定性的判别为依据，提出了临界风速的概念用来判定导线舞动的稳定性。
Therefore, the identification of the worst failure mode and the establishing of the corresponding performance equation are critical problems of the reliability analysis of fuzzy structural systems.
因此，最危险失效模式的识别及对应极限状态方程的建立是模糊结构系统可靠性分析的关键问题。
Based on the basic critical flow equation, formulae, which used to determine section factor Z and hydraulic exponent M for critical flow in city gate and horseshoe conduits, were derived.
针对水利工程上常用的城门洞形及马蹄形过水隧洞，利用临界流方程，给出了旨在用于临界流分析的断面参数Z和水力指数M 的计算公式和表示水深与Z以及M 之间的关系曲线。
Finally we find that the-effective critical current of RF-SQUID loop is greatly reduced by large fluctuation and the transition width can be determined with a simple equation.
结果表明：大的热涨落使RF - SQUID环路有效临界电流明显下降，从而使跃迁点大大提前，跃迁宽度满足一个普适表达式。
The relationship of gradient and corresponding critical slope height of the slope without significant constructional surface fits Masilofo equation.
通过试验得出无控制性结构面的边坡的极限稳定高度与坡角的关系大致满足马斯洛夫方程。
Through discussing above formulas, the critical mineralization degree equation of irrigation water was presented. The physical significance and...
通过对公式的讨论，提出了灌溉水矿化度临界方程，讨论了淋洗系数和优先流系数的物理意义和影响因素。
The calculated example shows that the practical equation can calculate the critical temperature for regular pyramidic space trusses.
通过算例比较表明，实用计算式可简便并偏于安全地计算正放四角锥网架结构的临界温度。
Combined with resistance equation of channel and critical incipient shear stress, the method of designing hydraulic geometry of stable channel is set up in this paper.
结合渠道阻力关系及临界起动切应力，可得到稳定渠道水力几何形态设计的方法。
The iteration equation of U-shaped channel normal depth and critical water depth in hydraulic calculation is deduced. The equation of boundary discharge to criterion water depth range is given.
导出了U形渠道正常水深、临界水深水力计算的迭代公式，并给出了判别水深范围的界限流量计算公式。
Through the introduction of main limit analysis theorem, this paper deduces the calculating equation of highway slope critical height in accordance with the two main stability failure.
通过对极限分析法主要定理的介绍 ，针对公路边坡失稳的两种主要情况 ，详细地推导出了公路边坡临界高度的计算公式 。
The equation on critical stress of matrix cracking that could consider the effect of interface layer and thermal stress can be obtained.
在此基础上建立了可以考虑界面层和热应力影响的基体开裂临界应力求解方程。
An equation to calculate the critical discharge for river bed variation in alluvial rivers was derived through the theory of non-equilibrium sediment transport.
利用非饱和和输沙公式，首次提出了以悬移质为主的冲积河流中冲淤临界流量与水沙以及边界条件的一般关系。
The deflection differential equation of string has been first solved by using infinite series method, and the formula of the buckling critical loads has been obtained with energy method.
首次用无穷级数法求解了其临界屈曲时的挠曲线微分方程，并同时用能量法给出了其临界屈曲载荷计算公式。认为能量法求解这种情况下的屈曲载荷比较困难和复杂。
The deflection differential equation of string has been first solved by using infinite series method, and the formula of the buckling critical loads has been obtained with energy method.
首次用无穷级数法求解了其临界屈曲时的挠曲线微分方程，并同时用能量法给出了其临界屈曲载荷计算公式。认为能量法求解这种情况下的屈曲载荷比较困难和复杂。
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