1) oscillatory solution
振动解
1.
Lemmas are presented to deal with the sign relation among the components of the nonoscillatory solutions; and then several criteria of oscillatory and asymptotic behavior are obtained.
研究了一阶三维线性脉冲时滞微分方程组的振动性与渐近性,引入了弱振动的概念,给出引理解决了非振动解各分量间的符号关系,由此得到了若干振动性与渐近性的判别准则,并举例说明了准则的有效性。
2.
In this paper, asympotic behavior of the oscillatory solutions to advanced type unstable differential equations \%x\+′(t)=p(t)x(g(t)),t≥0\% is studied, and some sufficient conditions that guarantee every osci llatory solution of the equation convergent to zero are obtained.
研究超前型微分方程 x′(t) =p(t) x(g(t) ) ,t≥ 0的振动解的渐近性 ,给出保证其每一振动解趋近于零的一组充分条件 ,其中 p(t)是在任何有限区间可积的正值函
3.
This paper reseached equation x ̄((n)) (t) + p(t)f(x(t),x(g(t)))=r(t) property of oscillatory solution.
得出了振动解的渐近性结论和振动解与非振动解渐过性的充分条件。
5) nonoscillatory solution
非振动解
1.
Existence of nonoscillatory solutions for forced higher order differential equations;
带强迫项的高阶微分方程非振动解的存在性
2.
The existence of nonoscillatory solution of a third order quasilinear differential equation;
一类三阶拟线性微分方程非振动解的存在性
3.
The existence of nonoscillatory solutions for higher order nonlinear neutral system of difference equations;
一类高阶非线性中立型差分方程组非振动解的存在性
6) non-oscillatory solutions
非振动解
1.
The purpose of this paper is to prove the existence of non-oscillatory solutions to second-order neutral time-lag differential equation with positive/negative coefficient by using contraction-image principle through defining an operator from a bounded,closed,and convex subset into Banach space.
通过定义有界闭凸子集到B anach空间上的一个算子,应用压缩映像原理讨论了带有正负系数的二阶中立型时滞微分方程非振动解的存在性,得到该方程非振动解存在的一个充分条件。
2.
By using Banach compression-imaging principle,the authors have made a discussion over the asymptotic behavior of non-oscillatory solutions to first-order neutral differential equation with forcing term,obtaining the sufficient conditions for every non-oscillatory solutions to the equation hereinabove tends to zero when t tends to infinity(t→∞).
应用压缩映像原理讨论了一类带强迫项的一阶中立型微分方程非振动解的渐近性,得到了该方程的所有非振动解当t→∞时趋于零的充分条件。
3.
The existence and asymptotic behaviour of non-oscillatory solutions of this equation are studied.
对二阶中立型时滞差分方程Δ(rnΔ(xn+pnxn-τ))+qnf(xn-σ)=0非振动解的存在性及渐近性进行了研究。
补充资料:点振子振动和点电极振子振动
分子式:
CAS号:
性质:又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内,形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积,且与厚度有适宜的匹配关系。在交变电场作用下,沿厚度方向产生振动,其振幅随着至电极中心距离的增加,呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄,有时考虑到压电陶瓷自身强度太低,可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。
CAS号:
性质:又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内,形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积,且与厚度有适宜的匹配关系。在交变电场作用下,沿厚度方向产生振动,其振幅随着至电极中心距离的增加,呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄,有时考虑到压电陶瓷自身强度太低,可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。
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