结构稳定性

The guidance system is built according to the relative relationship in three dimensions. For longitudinal plane, by introducing the subsidiary smooth function, the attraction domain of sliding mode are analyzed and determined, and the stability of the guidance system is proven, considering from the coupling relations of two planes in three dimensions.

根据末端三维弹目相对运动学关系，建立了三维制导系统的数学模型，并以纵向平面模型和变结构控制中到达条件为基础，引入分段光滑连续函数，以三维平面间的耦合关系为出发点，从两个方面分析并确定了过载受限变结构制导律的滑动模态吸引区，证明其制导系统的稳定性。

Single detector and coincidence Doppler broadening measurements using slow positron beam were carried out to study Ti/Al multilayer films. The main goal is to study the evolution of vacancy-type defects and inter-diffusion of elements in films subjected to different annealing conditions.

4符合多普勒展宽测量结合慢正电子束流研究了磁控溅射方法制备的Ti/Al多层膜，分析讨论了多层膜缺陷结构的热稳定性，实验结果表明，随退火温度的升高，点缺陷结构经历了迁移、聚集长大最后崩塌回复过程。

Therefore, the conclusion is acquired that effect of different earthquake waves to dynamic stability of frames is little, that is, ultimate displacement of frame is independent of dynamic load type.

由此，得出了不同地震波的作用对框架结构的动力稳定性影响不大的结论，即框架结构的极限位移与所施加的地震荷载类型无关。

According to the structure and the joint forms of steel tube modular falsework system, this paper also gives the stability and load capacity rule of scaffolds, setting up the mechanic model and puts forward the calculate methods of structural internal forces and stability.

根据钢管支架模板支撑系统的结构及连接形式，确定了支架稳定及承载力准则，建立了力学模型，提出了结构内力和稳定性计算方法。

Fictive temperature is used for measuring structural relaxation.

石英玻璃的结构弛豫伴随其结构与性能的变化，影响玻璃使用性能的稳定性。

Firstly, the relevant features of three kinds of structure such as CMSA, PMSA, FMSA are summarized and compared ,and the advantages of finger-shaped variable-capacitance micromechanical accelerometer on the base of bias stationary structure are presented.

并以该结构为分析对象，从加速度计的分辨率、量程、稳定性、灵敏度等性能分析比较了多种结构梁，提出了折叠梁的综合性能最好，最后通过分析计算出了折叠梁在检测方向的刚度。

Compact structure, small volume, appealing outline, vertical structure contributing to small occupation space for installation, center of gravity into the center of pump foot, thus having improved the operational smoothness and service life of pump.

泵结构紧凑、体积小、外形美观，其立式结构决定安装占地面积小，其重心重合于泵脚中心，因而增强了泵的运行稳定性和使用寿命。

The matrix analysis method was used to study the structure geometrical stability which is a measurement of structural performance.

分析中以结构的几何稳定性作为结构性能需求，采用了矩阵分析方法。

Geometries of two-dimentional hexagonal net and one-dimentional chain of C36 polymers were optemized by using PM3 and B3LYP/6-31G method. Their electronic structure and stability were also discussed . Band structure were calculated at ab initio level . Compered to the solo C36 molecular ,the results indicated that C36 unit"s structure in the polymers changed obviously and the polymerization increased the system"s stabilities .

本文在系统总结具有纳米尺度的碳团簇研究现状的基础上，着重开展了如下四方面的工作：首先采用PM3和B3LYP／6-31G方法对2D六方网状，以及1D链状C36聚合体的构型进行全优化，探讨了其电子结构和稳定性；并在从头算水平上计算了相应的能带结构。

This kind of homogenization is very important to study the stability of concrete structures.

混凝土结构的应力状态受温度和湿度变化的影响显著，而且往往导致威胁结构完整性和稳定性的裂缝。

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。