近点的

The sufficient conditions for guaranteeing the permanence of the system and the existence and uniqueness of periodic solution having globally asymptotical stability are obtained by using the extremum principle,fixed point theorem and V function method s together.

讨论一类具 Holling 类功能反应和放养的捕食链非自治扩散系统，应用极值原理和不动点定理及 V函数法，得到该系统的一致持久性以及存在唯一全局渐近稳定周期解的充分条件。

In this paper, the asymptotic synchronization in a lattice of partial-state couplednonidentical Lorenz and pendula equations are studied.

本文主要研究部分耦合的Lorenz和单摆格点动力系统的解的渐近同步性。

Chapter 2 is devoted to the discussion of the asymptotic synchronization of par-tially coupled Lorenz systems with the external coupling matrices being n×n irreduciblesymmetric real matrices having zero row sums and nonpositive off-diagonal elements.

在第二章我们讨论了当外部耦合矩阵是n×n阶实对称不可约，行和为零且对角线以外的元素非正的矩阵时部分耦合非恒同Lorenz方程格点系统的渐近同步问题。

And if the current slowdown in growth momentum to continue, this year will be almost 10 years to maintain the rapid growth of household savings of the inflection point.

如果目前的经济增长放慢的势头继续下去，今年将是近10年保持快速增长，居民储蓄的拐点。

When the initial states are random and the reference trajectory is iteration-varying, the new AILC can achieve the pointwise convergence over a finite time interval asymptotically along the iterative learning axis.

在随机初始状态和参考轨迹迭代变化的条件下，所提出的 AILC 仍可沿迭代学习轴渐近地实现有限时间区间上的逐点收敛性。

Basically,an optimal nonlinear control law based on an artificial neural network is presented,on the basis of the optimum trajectory from perilune to lunar surface in terms of Pontryagin's maximum principle according to the terminal boundary conditions and performance index.

其主要内容是，根据终端着陆条件和性能指标，以由庞氏极大值原理得出从近月点到月面的最优着陆轨迹为基础，给出一种基于人工神经元网络的非线性最优控制策略，使被控系统能通过神经网络对非线性的映射能力实现某种最优的非线性控制。

Over the past three years the company has invested substantial funds and scientific talent, committed to an intelligent lighting system, which lasted three years, capturing the smart switch "single access point the fire difficult, does not apply to energy-saving lamps, fluorescent lamps, switches itself Zhigong consumption, and higher temperature rise of a series of difficult questions and break the "energy-saving lamps can not single-fire switch dimming myth.

近三年来公司又投入了大量的资金和科研人才，致力于照明智能化的系统研究，历时三年，攻克了智能开关"单火取点难，不适用于节能灯、日光灯，开关本身功耗大、温升高等一系列老大难问题，打破了"节能灯单火开关根本不能调光的神话。

The study carried out a survey on the current situation of the safety and health prevention and protection in the production and the use of the man-made mineral wools based on the requirement of the ILO Code of Practice, Safety In the Use of Synthetic Vitreous Fiber Insulation Wools(glass wool, rock wool, slag wool).

3万篇免费论文，近200个详细分类，为你的论文写作排忧解难。点击进入本文围绕"安全使用合成玻璃纤维隔热棉实用规程"的要求开展了我国人造矿物棉的安全防护现状调查。

When stealth is no longer critical, the Lightning II can carry 18,000 pounds of ordnance on eleven underwing and fuselage stations for air interdiction and close air support missions.

当隐身问题不再需要考虑的时候，闪电II型能够在翼下挂架及机身下的挂点上携带18，000磅的武器执行空中遮断及近距离空中支援任务。

Since George Bush signed into law a one-off tax amnesty in 2004 that slashed corporate-tax rates from 35% to just over 5%, American companies have repatriated close to $350 billion in previously untaxed foreign profits, according to estimates by JPMorgan, a bank—just shy of Sweden's annual output.

自乔治布什于2004年签署了一项一次性的税收赦免法案将公司税率从35%大幅削减至5%多点后，据投行摩根大通称，美国企业已经遣返了近3500亿未缴过税的国外所得利润——快赶上瑞典的年产值了。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。