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In this article, We consider two important models for second order sublinear differential equations: the existence of infinitely many subharmonic solutions for Duffing equation with bounded restore force and for the sublinear impact oscillator.

本文考虑被数学和其他科学、工程领域的研究人员广为关注的两个重要的二阶次线性微分方程模型：具有有界恢复力的Duffing方程和次线性碰撞振子的无穷多个次调和解的存在性。

In this article, We consider two important models for second order sublinear differential equations: the existence of infinitely many subharmonic solutions for Duffing equation with bounded restore force and for the sublinear impact oscillator. They have attracted lots of researchers attention in mathematical, other scientific and engineering fields.

本文考虑被数学和其他科学、工程领域的研究人员广为关注的两个重要的二阶次线性微分方程模型：具有有界恢复力的Duffing方程和次线性碰撞振子的无穷多个次调和解的存在性。

Plant covers an area of 96 acres, located south of State Road 112, Church Lane West 2 2 kilometers, bounded by the Beijing-Kowloon Railway Line Ba Jin, South and the adjacent high-speed Tsubo.

二厂占地96亩，位于112国道南侧、堂二里西2公里，北临京九铁路津霸线，南与津保高速相邻。

At present, three companies affiliated enterprises, with a total area of 198 mu, coating factory covers an area of 22 acres located in Town¤·, the west side of the road corridor, bounded by the high-speed Tsubo Ba Jin and the Beijing-Kowloon Railway Line.

公司目前下属企业三个，总占地198亩，彩涂厂占地22亩位于胜芳镇北、廊大路西侧，北临津保高速与京九铁路津霸线。

Based on the electric models for shaly sands and tuffaceous sands, this text derived modelsof saturation bored with water for the tuffaceous sands: Tuffaceous sand S-B Model andEffective Medium HB Model;The first supposed that the parts of shaly sands and thetuffaceous part were electric parallelly, and the other considered the electric rock matrix as sandmatrix, tuffaceous matrix and shaly matrix were parallel, and ignored the difference betweenwater bounded with shaly sand and water in the formation.

基于泥质砂岩的导电模型并结合凝灰质砂岩骨架导电的特点，建立凝灰质砂岩含水饱和度导电模型：凝灰质砂岩 S-B 模型和有效介质 HB 电阻率模型；前者假设凝灰质部分与泥质砂岩部分并联导电，而后者将凝灰质砂岩骨架导电看成砂岩骨架颗粒、凝灰质颗粒和泥质颗粒的并联导电，并忽略粘土结合水与地层水导电性的差异。

This paper discusses the robust absolute stability of multivariable systems with multiple sector-bounded nonlinearities and unmodeled dynamics.

研究了同时具有多个扇形非线性环节和多个未建模动态的多变量系统的鲁棒绝对稳定性。

In this paper, the problem of adaptive stabilization of slowly time-varying systems with unmodeled dynamics is investigated in the presence of unknown but bounded disturbances.

摘要研究了含有未建模动态的慢时变系统的自适应镇定问题。

The approach can be used in the case where there exist parameter uncertainties, unmodeled dynamics and unknown bounded disturbances.

本文提出的控制方案提高了系统的鲁棒性能，使系统存在不确定性时，仍能保证全局稳定性，使闭环系统的所有信号都是有界的。

In the design of robust control that arises in the 1980s, the people adopt a new math model: nominal model and unmodeled bounded d...

在80年代兴起的鲁棒控制设计中，人们采用了标称模型和未建模动力学部分来描述被控对象。

In this paper,the problem of adaptive stabilization of slowly time－varying systems with unmodeled dynamics is investigated in the presence of unknown but bounded disturbances.

研究了含有未建模动态的慢时变系统的自适应镇定问题。考虑的对象具有非最小相位、含未建模动态和大范围时变参数等不良特性，且存在未知但有界外部扰动。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。