1) n-th order autonomous system
n阶自治系统
1.
Under general conditions,a method for solving first integrals of the n-th order autonomous system is given based on the generators of n-1 admitted single-paraeter Lie groups.
在一般条件下,对n阶自治系统给出利用系统所接受的n-1个独立单参数李群的生成元计算首次积分的方法,并给出方程组有满足条件的非零解的充要条件。
2) non-autonomous second order systems
非自治二阶系统
1.
This paper studies the existence of periodic solutions for some non-autonomous second order systems.
研究一类非自治二阶系统周期解的存在性问题。
3) 3-rd order autonomous system
3阶自治系统
1.
Under general conditions, a method for solving first integrals of the 3-rd order autonomous system is given based on the generators of two admitted single-parameter Lie groups.
在较一般的条件下,对3阶自治系统给出利用系统所接受的两个单参数李群的生成元计算首次积分的方法。
4) second order nonautonomous system
二阶非自治系统
1.
In this paper,we considered the existence and uniqueness of almost periodic solution to a class of second order nonautonomous system,also gave that only if a 1>0,a 2k+1 ≥0, x¨ +R(∑nk=0a 2k+1 x 2k+1 )′ x· +1L∑nk=0a 2k+1 x 2k+1 =Ae(t),(e(t) is an almost periodic function in some conditions) exists almost periodic oscillations,the results in [1-3] are extended and improved.
该文讨论了一类二阶非自治系统x¨ +RF′(x) x· + 1LF(x) =Ae(t)在一定条件下概周期解的存在唯一性 ,并得到了仅当a1 >0 ,a2k+ 1 ≥ 0时 ,x¨ +R(∑nk =0a2k+ 1 x2k+ 1 )′x· + 1L ∑nk =0a2k+ 1 x2k+ 1 =Ae(t) (R >0 ,L>0 ,A>0 ,e(t)为一定条件下的概周期函数 )存在概周期振荡 ,推广和改进了文 [1- 3]中的结果。
5) third order autonomous system
三阶自治系统
6) third-order autonomous chaotic system
三阶自治混沌系统
1.
Two different structures of third-order autonomous chaotic systems which is easy to realize in electric circuit are chosen.
选取了在电路上易于实现的两个异结构三阶自治混沌系统,并对其进行了混沌特征分析。
补充资料：[3-(aminosulfonyl)-4-chloro-N-(2.3-dihydro-2-methyl-1H-indol-1-yl)benzamide]
分子式：C16H16ClN3O3S
分子量：365.5
CAS号：26807-65-8
性质：暂无
制备方法：暂无
用途：用于轻、中度原发性高血压。
分子量：365.5
CAS号：26807-65-8
性质：暂无
制备方法：暂无
用途：用于轻、中度原发性高血压。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条