然后根据这个估计式，将问题化成求解一个条件变分问题。
Using this estimate, it may be simplified to solve a problem of the conditional variation.
随着年龄的增长，这些条件可能会变，它周围的区域可能不再适合它的后代。
As it ages, these conditions may change and the area around it may no longer be suitable for its offspring.
另一种可能是，宇宙可能曾经经历过一次由上一个宇宙塌缩而造成的跃变，具体情况取决于宇宙的初始条件。
Another possibility, depending on the initial conditions, is that the Universe could have undergone a bounce, resulting from the collapse of a previous Universe.
不过，同大多数快递公司不同的是，援助人员是在混乱之中行动，受到瞬息万变的条件限制(人潮的蜂拥、疾病的爆发、军阀的袭击)。
But unlike most couriers, aid donors operate amid chaos, with rapidly changing constraints (surges of people, outbreaks of disease, attacks by warlords).
获得了一类带有连续和分段常数变元的中立型微分方程所有解振动的新的充分条件。
The new sufficient conditions for the oscillation of all solutions of the neutral differential equation with continuous and piecewise constant arguments are obtained.
最后通过线性参变控制，获得了用有限维数线性矩阵不等式描述的充分条件。
A sufficient condition is obtained using finite dimension linear matrix inequalities (LMI) describing by linear (parameter-variety) control.
利用变结构控制的不变性，使受控系统在滑模面上与满足匹配条件的系统不确定性无关。
By using the invariance property of VSC, the controlled system independent of the uncertainty which satisfies the matching condition on the sliding surface.
如何在瞬息万变的全球化市场环境下取得竞争优势，快速反应是生存的必要条件。
How to acquire the competitive advantage in this protean global market place? Timely reaction is of course a necessary condition for survival.
同时从能量最小原理出发，用变分的方法推导出几种端值条件，说明它们的力学背景。
Some end value condition derived by variational method in accordance with the least energy loss principle and their mechanical background are also dealt with.
最后给出塔里木油田英买力地区第三系盐层在均匀和非均匀地应力条件下盐岩蠕变引起的套管岩压外载实例。
Finally, the examples of external load due to the salt creep in the tertiary of Yingmaili oil field have been performed under heterogeneous and homogeneous in-situ stresses.
应用交替分段显隐方法求解变系数对流扩散方程，此方法具有很好的并行性且无条件稳定。
Using alternating segment explicit implicit method for the variable coefficient convection diffusion equation. The method has the obvious property of parallelism and is unconditionally stable.
然而桥梁横跨江河、湖泊、山谷、海峡，连接陆地和岛屿，地理位置千变万化，各处气候条件复杂。
However the bridge spans river, lake, valley, and straits, linking the island to the mainland, its geography variable and weather condition complicated.
本研究的目标是在MESCC已建立的模型动物中检验是否实验条件诱发的高血糖症会加速神经组织的退变。
The goal in this study was to determine whether experimentally induced hyperglycemia accelerates neurological decline in an established animal model of MESCC.
验证了稳定平台控制系统对于变结构控制的不变性条件，构造了滑动模态。
The invariant conditions of the stabilized platform control system for variable structure control were verified and a sliding mode was constructed.
最后结合制作加工的难易程度和经济分析等，提出了上述三类变截面支座的适用条件。
At last, the applying conditions of the abutments are suggested according to the difficult degree of manufacturing and the economy analysis.
文中引入了一类广义不变凸函数，对一类变分问题给出了最优解的充分性条件以及对偶理论。
The generalized invex functions are introduced and the optimality theorems and duality theory are established for a class of variational problems.
铜川矿区5＃煤层中的高岭石泥岩夹矸是由酸性火山灰在近地表的成煤条件下经酸性水淋滤、蚀变而成的。
The kaolinite tonstein in the seam5# is formed by acidic ash alterated in the acid medium in peat bog in tongchuan district.
论述了矽卡岩一斑岩型钼矿床的成矿地质条件、围岩蚀变、矿床特征和矿床成因。
Furtherly are discussed geological condition under which skarn - porphyritic molybdenum ore deposit are formed, alterations in wall rocks and the genesis of the Mo-deposit.
它可以求解在任意边界条件下任意变系数正定或非正定偏微分方程。
It can be applied to solve nonpositive definite or positive definite partial differential equation with arbitrary variable coefficient under arbitrary boundary condition.
详细介绍了采用单神经元自适应PS D控制器对电流环进行调节的方法，使电机能稳定工作在变负载条件下。
Controlling method of current loop with single neuron adaptive PSD controller which can make motor work stably in the condition of changing load is discussed in detail.
另一种处理方法是只对弥散项实施积分变换，应用边界条件，得出变分方程。
The other method is to perform the integration by parts only to dispersion term, then introduce the boundary conditions, and finally obtain the variation equation.
在比（AR）条件更弱的一类超线性条件之下，利用变分方法讨论了一类超线性四阶椭圆方程的无穷多解的存在性。
By means of the variational approach, in a condition weaker than(AR) the existence of infinitely many solutions of fourth-order elliptic equation is discussed.
汽轮机在变工况条件下，调节级的计算比较复杂。
The calculation of turbine regulating stage is complex under the variable operation condition.
提出了一种等式到达条件下的离散变结构组合控制策略，设计了基于该控制策略的负载频率控制器。
A discrete variable structure composite control strategy which use an equality form of the reaching condition is proposed and applied to design the load_frequency controller.
根据统一蠕变模型和该模型导出的蠕变方程，研究了分级加载条件下的岩石蠕变特性，并且通过曲线拟合得出了相应的蠕变参数。
Based on the unified creep model and the relevant creep equations, the creep properties of rock under step load is studied, and the corresponding creep parameters by fitting curves are obtained.
随着环境和室内热负荷的变化，制冷空调系统通常是在变工况条件下运行。
With the change of environment and indoor heat load, the refrigeration and air-conditioning system almost operate at varying condition.
然后利用拉格朗日乘子法，吸收第一类边界条件，从而得出其广义变分原理；
Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundary condition.
然后利用拉格朗日乘子法，吸收第一类边界条件，从而得出其广义变分原理；
Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundary condition.
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