查询词典 characteristic

The new method is a combination of characteristic approximation to handle the convection part, to ensure the high stability of the method in approximating the sharp fronts and reduce the numerical diffusion, a smaller time truncation is gained at the same time, and a mixed finite elementspatial approximation to deal with the diffusion part, the sealer unknown and the adjoint vector function are approximated optimally and simultaneously.

此方法即为对方程的对流项沿流体流动的方向即特征方向进行离散，从而保证格式在流动锋线前沿逼近的高稳定性，消除了数值弥散现象，并得到了较小的时间截断误差；另一方面，对方程的扩散项采用混合元离散，可同时高精度逼近未知函数及其伴随向量函数，理论分析表明，此方法是稳定的，具有最优的L~2逼近精度。

In the second chapter, the problem of the optimal inputting rate control for a class of competitive population dynamics system with age-structure is discussed. By means of characteristic line, Gronwall Lemma, Bellman Lemma, adjoint system and so on, the Lipschitz continuity properties of the system in terms of the control variable is certificated, and the necessary condition of the optimal control is obtained.

第二章讨论了一类具有年龄结构的竞争种群系统最优输入率控制问题，综合应用特征线法，Gronwall引理，Bellman引理，共轭系统等知识，证明了系统解关于控制变量的Lipschitz连续性，给出了控制为最优的必要条件。

The formal solution of partial differential equations is given on characteristic line, the existence of the optimal control is proven by using Ekeland\'s variational principle, Gronwall Lemma and adjoint system, then the necessary condition of optimality is obtained by means of the conception of normal cone.

用特征线法表示出偏微分方程的形式解，利用Ekeland变分原理，Gronwall引理和共轭系统证明了最优控制的存在性，并借助于法锥概念得到了最优控制的必要性条件。

Its characteristic is that the penalty is suspending not terminating at the same time of adjudgment, so it is still possible to resume.

其特点是在判刑的同时宣告暂不执行，但在一定时间内保留执行的可能性。

The sixth chapter probe into the city planning and administrant institution by Japanese during the war, and analyzed its characteristic.

第六章对日本占领下天津的城市规划方案、管理制度等进行了探讨，理清其特征。

Administrative guidance shows the modern characteristic of administration in law and administration in service,it also shows the equality of administrational relationship and the necessary of country's intervening and its limit.

行政指导体现了现代法治行政和服务行政的特色，体现了行政关系的平等化和国家干预的必要性及限度，因此，它将在我国行政管理领域发挥越来越重要的作用。

Through elaborating the connotation of public service socialization and its influence on the administrative domain in our country,and combining the current administrative organization culture characteristic,this article analyzes its function of administrative organization culture innovation in...

通过阐述公共服务社会化的内涵及其对我国行政管理领域的影响，结合当前的行政组织文化特点，简要分析了其在我国行政组织文化创新中的作用。

2Research of strength characteristic for high bending concreteWe researched the bending strength, compression stength and cleavage strength characteristics of different type, different design strength and different age HBSPC , and analyzed the relations of of the strength of different HBSPC,we also analysised the influence regulation for HBSPC strength by the the admix amount and feeding sequence.

2高抗折强度路面混凝土强度特性研究。研究不同类型、不同掺量和不同龄期HBSPC的抗折强度、抗压强度和劈裂强度特性，并分析HBSPC不同强度之间的关系。

It is said to be characteristic of adolescence and early adulthood.

它被认为是青春期或成年期初期所特有的现象。

The violin has the sound to be bright, the timbre delightful characteristic, always has the numerous amateurs and the adorer.

小提琴具有声音明亮，音色甜美的特点，历来拥有众多的爱好者和崇拜者。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。