查询词典 parabolic cusp

The third part of this paper aims to study the global solvability or nonsolvability of a semilinear parabolic equation with singular potential.

论文的第三部分是对带奇异项的半线性抛物方程的整体可解性和不可解性的研究。

This paper concerns mainly about the solvability and the properties of the solutions to the semilinear elliptic and parabolic equations or systems.

本论文主要是研究半线性抛物和椭圆方程或方程组的可解性及其解的性质。

The second part of this paper is to consider the Fujita critical exponent of the semilinear parabolic equation with Neumann boundary value on unbounded daomain.

第二部分是对无界区域上带Neumann边值的半线性抛物方程的Fujita临界指数的研究。

The dynamics of coupled system of semilinear parabolic equations with time delays is investigated using upper and lower solutions and its associated monotone iterations. The asymptotic behavior of solutions is given.

利用上、下解方法及相应的单调迭代序列研究具有时滞的耦合半线性抛物方程组的动力学行为，给出了解的渐近性质。

A MoSi2 coating on C-103 niobium alloy was prepared by packing cementation, and the microstructures of the oxidized and unoxidized coatings were analyzed by XRD, SEM and EDS techniques. The formation mechanism of the silicide coating was investigated. The results show that the silicide coating is formed by reactive diffusion and the silicification process obeys parabolic relation.

采用包渗法在C-103铌合金基体上制备MoSi2涂层，通过X射线衍射、扫描电镜和能谱分析等手段研究涂层表面、截面形貌以及氧化后涂层结构变化，并分析硅化过程中涂层的形成机理。

The results show that the silicide coating is formed by reactive diffusion and the silicification process obeys parabolic relation. The coating is composed of composite structures including MoSi2 outer layer, two-phase transient zone with major NbSi2 and minor Nb5Si3, and Nb5Si3 diffusion inner layer. The coating possesses good high-temperature oxidation resistance and spalling resistance.

研究结果表明：包渗法制备硅化物涂层是通过反应扩散形成的，硅化过程服从抛物线规律；该涂层为复合结构：MoSi2相为主体层；以NbSi2相为主、并含少量Nb5Si3相的两相为过渡区；Nb5Si3相为扩散层。

Many methods, including difference methods,collocation methods and standard finite element methods for singular parabolic equations have been proposed and analyzed ,and some good results have been obtained.

但利用非标准有限元方法，对奇异微分方程进行研究的文章迄今很少见到。时空有限元法将时间和空间两个变量统一起来，在时间和空间两个方向上同时发挥有限元的优势，实现时间和空间两个方向的高精度。

Then,graphs of daily average solar beam radiation for every month have been plotted in this paper.By comparing and researching the data and graphs,two kinds of compound tracking modes for the parabolic-trough reflector are obtained.

通过对所得数据及曲线图的比较和研究，获得了聚光反射抛物镜面两种较好的组合跟踪方式，效率分别达到双轴跟踪的98.9%和99.34%。

Next year will be on coal, ore spodumene, bromamine, tellutide and other energy resources; foudamental acid oil plants of raw materials, tetaining solar parabolic reflector as environmental protection equipment and parts of the implementation of a lower rate of tax on imported tentative; continue to crude oil, wood pulp, ferrolloy, steel billet, part of the assets'protection, such as energy consumption on the environmental impact of large exports tentative tax rate.

明年将对煤炭、锂辉石矿、溴、碲等能源资源类产品，植物酸性油等基础性原材料，槽式太阳能抛物面反射镜等有利于环境保护的设备及零部件实施较低的进口暂定税率；继续对原油、木浆、铁合金、钢坯、部分钢材等资源性、生产能耗高、对环境影响大的产品实施出口暂定税率。

The standard parabolic equation method was obtained by the decompocition of the scalar wave equation and the expansion of the pseudo-differential operator.

通过对传统波动方程的分解和伪微分算子的近似展开，获得了标准抛物线方程。

Sales skills, organizational skills, and self-directed time management skills will be essential for those in this position.

销售技巧，组织能力和自我导向的时间管理技能对于这些职位将是必不可少的。

We stayed in the station's waiting-room until evening.

我们在车站待到晚上。