充分研究

In this paper, through stability analysis based on a novel Lyapunov function and Lyapunov's direct method, the sufficient conditions of global asymptotical stability and the deductions are given.

文中引入一种新的 Lyapunov 预选函数，采用 Lyapunov 直接法研究系统的稳定性问题，得到了系统全局渐近稳定的充分条件及推论。

We obtain the sufficient conditions for the global attractivity of the zero solution and the positive equilibrium N.

研究具有多个滞量的离散Nicholson苍蝇模型的全局吸引性，获得了零解全局一致渐近稳定及正平衡态N＊全局吸引的充分条件，推广了已有的相应结论。

The sufficient conditions for persistence and global attractivity of peridic solutions are obtained by means of using differential inequality and constructing suitable Lyapunov function.

研究了一类扩散具有时滞的非自治捕食系统的持久生存与周期解问题，利用微分不等式和L iapunov泛函的方法得到了该系统持久生存与周期解全局吸引的充分条件。

By using comparison principle, the sufficient conditions of this model with global attractivity of infection-free periodic solution and system permanence were obtained.

研究一类具有阶段结构和脉冲免疫的SIR模型，利用比较原理得到此模型无病周期解全局吸引和系统持久的充分条件，并利用数值模拟验证结论。

The theoretical analysis methods on the first—order and second—order mechanical autofrettage technique of thick—walled cylinders, with reflecting the material characteristics, are studied systematically in this thesis.

本文首次提出和研究的厚壁圆筒二次机械自紧技术，可扩大机械自紧技术在不同口径身管上的应用，降低冲头的推力，充分挖掘现有设备的潜力。

It will expand the use of mechanical autofrettage technique on different—bore tubes, cut down the push force and further tap the potentialities of current equipments.

本文首次提出和研究的厚壁圆筒二次机械自紧技术，可扩大机械自紧技术在不同口径身管上的应用，降低冲头的推力，充分挖掘现有设备的潜力。

The significance of physics and computer in molecular biology and polymer is represented in this paper, which reveals the bloomy vitality of cross subjects.

本文充分体现了物理学，计算机等科学在分子生物学和高分子物理研究中的意义，显示了交*学科旺盛的生命力。

In order to fully utilize the by-produced waste acid from the hydrofluoric acid production,which contents 12% effective hydrofluoric acid,the analysis,research and investigation were made on the feasibility of using it to replace the industrial hydrofluoric acid(30%) to produce potassium borofluoride .

为充分利用氢氟酸生产过程中副产废酸中12%的有效氢氟酸，对其代替工业氢氟酸(质量分数30%)生产氟硼酸钾的可行性进行了分析、研究、探讨。

To the current situation of the development of the fibrous concrete at present, this text fully consulted the domestic and international documents, on the basis of forefathers' study, found a kind of natural mineral fiber, fibrous brucite. Its existence is steady in the nature. It's the ideal substitute of asbestos fibre.

针对目前纤维混凝土的发展现状，本文在充分查阅了国内外的文献资料，在前人研究的基础上，找到一种天然矿物纤维水镁石纤维，我们发现它稳定的存在于自然界中，是石棉纤维理想的替代品。

It was found that the extract of Ficus carica leaves showed remarkable inhibitory and killing effects on the Newcastle disease virus.

采用组织细胞培养技术，充分利用无花果叶提取物中的有效成分，在人上皮样癌（Hep-2）细胞株、地鼠肾（BHK21）细胞株和鸡胚成纤维细胞上研究其抗新城疫病毒的作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。