结构稳定性

Hot-Melt Laminating Machine is to laminate two or more different materialstogether through thermal radiation;meanwhile,apply appropriate pressure to make them become one composite.It has high adaptability and stability adn is widely used for laminating cloth leather,shoes soles and foaming sheets.lt use PE pellicle to replace glue which makes stronger effect and longer time for products stock,no discolouring,not easy to tear apart.This machine combines with the actiyator and automatic temperature circuit,which allows thick and thin laminating.accurate control of production quantity and quality,and is able to count amounts.Modern structure.stable performance,simple operation,low faulty rate and long operating life make it a fabulous machine

热熔复合机是通过热辐射对塑料、片材进行热熔贴合处理，把两种或两种以上不同材料相结合并施加一定压力使这复合成一体的加工机器，多用于服装皮革，鞋底鞋材，轻泡片材的复合加工，其优点用于PE薄膜替代胶水贴合，产品时间库存长，无变色迹象，不易撕开，贴合效果强于胶水几倍，具有广泛的适应性和稳定性，本机结合调速电机，自动温控电路，可方便准确的控制生产量和复合质量、可计数计码，是理想的复合设备，该机具有结构新颖，性能稳定，操作简单，故障率低，使用寿命长等诸多优点，我公司该产品设计有三种规格，用户可根据具体生产情况选购，如有需要可定做其它特殊规格的品种。

Structural materials in fusion reactor are easily embrittled by He atoms produced from α particles and neutron irradiation, resulting in the degradation of stability and safety in nuclear facilities. Thus, it is necessary to improve the ability of helium embrittlement resistance in materials.

聚变堆结构材料极易因α粒子和中子辐照引入大量的He原子而脆化，降低核设施的稳定性和安全性，因此，必须提高材料的抗氦脆能力。

In chapter 5 especial concentration is focused on the theoretic study to the physical structure of dense phase around a rising bubble, of which the knowledge are very wanted at present. For the first time, bubble-caused disturbance propagation in emulsion phase and its effect on the stability of bubbles are described, and the slugging phenomena is also related. These reinforce the proceeding of a proper selection of fluidizing conditions.

第五章对目前还较少进行研究的乳化相的物理结构进行了理论研究，首次描述了气泡及其引起的扰动信号在乳化相中的传播规律，以及对气泡稳定性的影响，分析了气固流化床中腾涌现象发生的操作区域，为流化床反应器合理地选择运行工况提供了一定的理论依据。

Stable, compact and well-settling nitrifying granules can be developed for simultaneous nitrification and denitrification removal of nitrogen.

在本试验中，培养出结构致密稳定性良好，硝化效果和反硝化效果均良好的硝化颗粒。

First of all, the history of phase locked technology and the actuality of researches on it are introduced. Then, beginning with the fundamental principles of a phase-locked system, we build the mathematical model based on the architecture of the traditional analog PLL, and afterwards investigate some of its characters such as tracking, acquisition, noising, and stability. The system parameters are developed at the same time, and some universal conclusions on the theoretical analysis of PLL are reached.

论文首先对锁相技术的发展历史和研究现状做了简单介绍，然后从锁相系统的基本工作原理引入，以传统模拟锁相环的结构为基础，分析了锁相环的数学模型，并以此为出发点对锁相环的跟踪性能、捕获性能、噪声性能以及稳定性等各种性能进行了深入的分析，对环路的各项参数指标进行了详细的推导，得出了锁相环数理分析的普遍结论。

Taking Eremothecium ashbyii (abbreviated as Eaw95. 1) as the original strain, after Υ-ray mutation, tubercidin and 8--azaguaniae (8--AG) resistant tests, a strain labeled as T〓 capable of overproducing riboflavin was obtained and its genetic stability was analyzed. Compared with Eaw95. 1, the riboflavin productivity was improved about 40% by flask--shaking tests.

以Eremothecium ashbyii为出发菌（间称Eaw95.1），通过Υ-射线诱变，杀结核菌素和8-氮杂鸟嘌呤等结构类似物的的抗性筛选，获得了一株核黄素高产菌T〓，并对菌株的遗传稳定性进行了研究，获得了较好的效果，与出发菌株相比，核黄素的摇瓶发酵产量提高了近40％。

The piston mathematical model of some type engines in topology optimization was founded using variable density method. According to the optimization area of the piston pin seat and the thrust face, the topology optimization of piston structure in this area was studied using the HyperWorks software premising the stability of skirt's distortion.

建立了某高速发动机活塞的变密度法拓扑优化数学模型，以活塞销座和推力面之间的区域为优化区域，在保证裙部变形稳定性的前提下，利用HyperWorks软件对该区域的活塞结构进行了拓扑优化。

By presupposing the system uncertainties satisfying certain matching conditions, a sliding-mode switching manifold and a SMC law are proposed, which are invariable to the structural uncertainties and possess the parameters without stochastic noise. Then, the accessibility of the sliding mode and the stability of the closed-loop system are analyzed, and some necessary conditions are further obtained to select the parameters for the SMC law.

在系统的不确定性满足一定匹配条件的情况下，构造了对不确定性具有不变性以及参数不含噪声激励的滑模切换流形和变结构滑模控制律，分析和证明了滑模的可达性和闭环系统的稳定性，并给出了滑模控制律的参数选择条件。

Based on the theory of two-phase fluids dynamics, the general governing equation is established, which is applied to the fields of seepage, consolidation and deposit. For the first time, the mechanics properties of the soil affected by seepage are studied by the means of experiment. The problems of the modified indexes of mechanics and constitutive relation are solved due to the formulations obtained of mechanics parameter under seepage condition. Applied fuzzy theory and modern project design method, the fuzzy probability model for stability analysis is stetted up; Considered variation of mechanics parameter and curtain effect, the deformation patterns of deep execution are systematically analyzed.

基于两相流理论，推导了适用于渗流、固结和沉积的统一形式的控制方程；试验研究了渗流作用下土的力学性质的变化规律，经综合分析得到力学指标的定量表达式，为工程设计和数值计算中力学参数的确定提供了参考；基于模糊理论和现代工程设计方法，建立了基坑失稳的模糊概率模型，为基坑稳定性预测提供了新的方法；对基坑变形规律作了系统分析，考虑了土性变化和帷幕防渗效果对支护结构变形的影响，得到了较满意的结果。

Cutting process of soft tissue and organs is very important in virtual surgery simulation. Tetrahedron is widely used to construct the geometric model of virtual organs. Efficient methods must be developed to split or merge tetrahedrons in order to adapt to topology changes during cutting process. The main parts of this thesis are the two chapters on "Reconstruction of Tetrahedrons" and "Stability of Tetrahedrons".Main research work I have done is listed as follows:1 Reconstruction of Tetrahedrons.

人体软组织及器官的切割仿真是虚拟手术仿真的重要组成部分，软组织及器官的几何模型普遍采用四面体模型，切割的同时，软组织及器官的拓扑结构发生变化，模型中的部分四面体基元必须能够通过分裂或合并以适应上述变化，医学数据在三维场景中的交互和可视化是手术仿真的基本要求，因此，第二章&四面体重构&以及第三章&四面体单元稳定性&是本文重点讨论的两个部分。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。