By comparison theorem and the upper - lower solution method , the conditions for the global existence and the finite time blow - up of solution to the system are established 通過運用比較定理和構(gòu)造上、下解方法,建立了該方程組解的整體存在和有限爆破的充分條件。
Abstract : in this paper , the problems met in designing , producing and use of the rotary - vane vacuum pump are discussed . the solution methods and the research direction are given 文摘:本文論述了旋片真空在設(shè)計、生產(chǎn)和使用中存在的問題,提出了解決的方法和研究方向。
The slab target temperature function of optimizing temperature decision of heating furnace and its solution method for delay rolling were introduced 摘要介紹了鋼坯加熱爐優(yōu)化待軋爐溫決策的目標(biāo)函數(shù)及求解方法,并提出了運用在實際控制系統(tǒng)中的一種優(yōu)化待軋爐溫解決方案。
The existed optimal models for flood management are summarized ; especially the real time optimal operation models for reservoir and their solution methods are discussed 在歸納分析現(xiàn)有洪水管理系統(tǒng)最優(yōu)化方法與數(shù)學(xué)模型基礎(chǔ)上,討論了洪水實時調(diào)度模型特點及一般求解途徑。
Differential method is used for the discretion of time zone , and a direct solution method and an incremental solution method are given out for the solution of the non - linear system equation 求解方程時,在時間域上采用差分法進行離散,給出了求解系統(tǒng)方程的直接法和增量法。
The paper introduces the computer fault fault , which is due to network card fault 、 transfer medium fault and enviironment fault , and explains the solution method about them 介紹可能遇到的網(wǎng)卡故障、傳輸介質(zhì)故障、環(huán)境原因造成的計算機網(wǎng)絡(luò)故障等,并說明解決網(wǎng)絡(luò)故障的排除方法。
We study the existence problem of fourth - order boundary value problems with a derivative term using upper and lower solution method . then we give an application of our results 摘要利用上下解方法,研究了含導(dǎo)數(shù)項的四階微分方程邊值問題的解的存在性,給出了所獲結(jié)果的一個應(yīng)用。
Setting out from various solution methods for a one - order differential equation , some techniques of solution differential equation are given , and from here what should be noticed are explains 本文從一個一階微分方程的多種解法出發(fā),展示解微分方程的某些技巧,并由此說明幾點應(yīng)注意的問題。
Using the trial - solution method under specific boundary conditions , the diffusion equations were derived of chlorine , singlet oxygen , and total oxygen in gas and liquid phases 在實際工作中的射流發(fā)生器非常復(fù)雜,其擴散方程和邊界條件為非線性,非齊次邊界條件,非齊次泛定方程組,求解難度較大。