The conditions of simultaneous blow-up,blow-up rates and blow-up set are given.
研究了如下方程组的Cauchy问题:ut=Δu+up1(x0(t),t)vq1(x0(t),t),vt=Δv+up2(x0(t),t)vq2(x0(t),t),u(x,0)=u0(x),v(x,0)=v0(x),其中x0:R+→RN是H lder连续函数,给出了非负爆破解同时爆破的条件,得到了其爆破速率和爆破集。
Some sufficient conditions for finite time blow-up and a necessary condition for simultaneous blow-up are obtained.
作者考虑了一类带非局部源的拟线性抛物方程组在Dirichlet边界条件下正解的性质,得到了有限时刻爆破的充分条件及同时爆破的一个必要条件,同时还建立了爆破解的一致爆破模式。
This paper deals with non-simultaneous blow-up for a reaction-diffusion system with Absorption and nonlinear boundary flux.
考虑了一类具有非线性吸收源和边界流的反应扩散方程组的非同时爆破条件,在适当的假设下,建立了该类方程发生非同时爆破的充分条件。
The existence theorem of blow-up solutions,the upper bound of "blow-up time",and the upper estimate of "blow-up rate" are given under some suitable assumptions on g,f and initial data.
运用Hopf极值原理讨论了一类具Dirichlet边界条件的半线性抛物方程ut=(g(x)u)+f(x,u,q,t)(q=|u|2)的爆破问题,在对函数f,g和初值作适当的假设之下,给出了爆破解的存在性定理和“爆破时刻”的上界估计及“爆破率”的上估计。
By constructing an auxiliary function and using Hopf s maximum principles on it,existence theorems of blow-up solutions,upper bound of"blow-up time,"and upper estimates of "blow-up rate" were got respectively under suitable assumptions on f,g and initial function u\-0(x).
运用辅助函数法和 Hopf极值原理讨论了一类具有非齐次 Neumann边界条件 u/ n=g(x,t)的半线性抛物方程 u,t=Δ u+f (u)的爆破解 ,在对函数 f ,g和初值作适当的假设之下 ,给出了爆破解的存在性定理和“爆破时刻”的上界估计及“爆破率”的上估计 。
This paper mainly studies the blasting technology and blasting vibration in Xiaolongtan,and explains millisecond blasting mechanism and reducing millisecond blasting vibration mechanism.
阐述了延时爆破机理和延时降震机理。
Non-simultaneous Blow-up for Heat Equations with Positive-Negative Sources and Coupled Boundary Fluxes;
带有正—负源和边界流的热方程组的非同时爆破
Non-simultaneous Blowing up for Heat Equations with Multiple Nonlinearities;
多重非线性热方程组的非同时爆破问题
Global Existence and Blow-up for a Localized Reaction-Diffusion Coupled System
一类具有非线性吸收源和边界流的反应扩散方程组的非同时爆破条件
Research on High Building Demolish by Blasting of Bidirectional Synchronization Collapse on the Same Floor
同层位无时差双向折叠爆破新技术的应用
test of burst response of tyre
轮胎爆破响应时间试验
a stop consonant made by the suction of air into the mouth (as in Bantu).
嘴吸气时产生的爆破音。
When a bridge is to be blasted as a non-military operation, completely different demands are made.
当一座桥梁被做为非军事工程爆破时，就产生了完全不同的要求。
A study of a fired round with photographs taken during different phases can provide the possibility of determining fragmentation graphically.
研究爆破过程中不同时间拍摄的照片，为用图解法确定破碎度提供了可能性。
Numerical Simulation of Different Detonation Modes for Underwater Drilling Blast
水下钻孔爆破不同起爆方式的数值模拟
Development and Innovation Delay Initiating Techniques to Reduce Blasting Vibration
延时起爆干扰减震爆破技术的发展与创新
Measurement and analysis of blasting vibration under the condition of different blasting explosives
不同装药量下的爆破振动测试与分析
Research on Critical Failure Vibration Velocity of Concrete Lining in Different Thickness Under the Acting of Blasting Vibration
不同厚度砼衬砌的爆破临界振速研究
Study of Time and Frequency Analysis of Blasting Vibration Signal and the Prediction of Blasting Vibration Characteristic Parameters and Damage;
爆破振动信号时频分析与爆破振动特征参量和危害预测研究
Diversion Tunnel Blast Vibration Effect Analysis during Powerstation Expansion Project;
增容扩机时引水洞爆破振动影响分析
There are many different materials which can be used as blasting mats.
许多不同的材料均可用做爆破防护垫之用。
a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy').
在同一点上发出的包含爆破音和擦音混合音。
The application of multirow and synchronizing delay blasting technique in Jinchangyu Gold Mine
多排同段爆破技术在金厂峪金矿的应用
The Research of Decreasing Multi-row and Simultaneity Blasting Technology of Underground Metal Mine;
地下金属矿山多排同段递减爆破技术研究