结构稳定性

Numerical results show that the vibration characteristic and dynamic stability of the rotating ER sandwich beam can be adjusted when it subjected to an electric field, and the ER material layer can be used to improve the dynamic stability of the rotating flexible beams.

故在一定的条件下，可以通过控制作用于电流变夹层梁的电场强度来调节旋转运动柔性梁的振动特性，提高结构的动力稳定性。

Through force analysis of bill board on high roof and calibration o f strength and stability of bill board steel structure under the action of self weight and wind-force to determine the reasonable structure and material used fo r saving the rude material.

对高层屋顶广告牌的设计进行了受力分析，校核了广告牌钢结构在风力及自重力作用下的强度及稳定性，能在满足要求的前提下节约原材料。

In the mechanical design, the paper accomplished the shell design and inner structure design, which remarkably improved the system's security and stability.

接下来论文完成了系统机械部分外观和内部结构等的改造设计，显著提高了系统的安全性与稳定性。

The system voltage instability risk indices that are obtained using the risk assessment method include the voltage instability probability, expected load curtailment to avoid voltage instability, and the relationship between load curtailments and voltage instability probability.

该方法考虑发电机可用发电容量、电网结构及负荷的概率不确定性因素，利用蒙特卡洛模拟法抽样系统样本，并以所提电压稳定校正控制方法来判断样本的静态电压稳定性以及对样本进行电压稳定校正控制。

Main emphasis is put on the description of structure and performance of the Ti: sapphire femtosecond laser system. Moreover, a theoretical analysis is also given on the modelocked stability of the resonant cavity.

重点论述了作为双光子辐射光源的钛蓝宝石飞秒激光器的结构设计和性能测试，并对谐振腔锁模稳定性进行了理论上的验证。

Researching automatic screen printer,this paper proposes a hardware architecture of motion control system of automatic leadfree screen printer based on PLC,completes software design of motion control system, introduce FSM thinking in the programmingprocess,not only simplifies programming,but also guarantees the stability and reliability of system effectively; solves the problem ofabsolute positioning when motor need switching frequency, guarantees operating speed and motion control accuracy of system.

以全自动锡膏印刷机为研究对象，提出了基于PLC的印刷机运动控制系统的硬件体系结构，完成了运动控制系统的软件设计，将状态机思想引入于PLC程序的编写中，不仅简化了编程，而且有效保证了系统的稳定性及可靠性；解决了电机需要切换倍频时的绝对位置定位问题，提高了系统的运行速度及运动控制精度。

To attaining longlived charge separated states, the new compounds 7 and 8 of C60-S-2-thioxo-1, 3-dithioles derivatives were synthesized by Diels-Alder cycloaddition reaction. The structures generated by AM1 were used as the initial configurations for the density functional optimization at the B3LYP/3-21G level for all carbon and sulfur clusters, and some geometry conformation indexes were obtained. We found that C60 has been half-packed by the curved 2-thioxo-1, 3-dithioles derivatives.

为了获得具有长寿命电荷分离态的[60]富勒烯－富硫衍生物有机功能分子，我们设计了用单键硫桥键联[60]富勒烯和硫酮衍生物的分子7和8，用半经验AM1方法得出最低能量的几何结构，在此基础上用密度泛函 B3LYP/3-21G方法，对其进行计算，得出电子相关的优化参数，预测其稳定性。

So the considerations that concern merchant ship designers, such as intact stability, structural integrity, fire safety and manoeuvrability, also have to be addressed in the naval case.

因此，考虑因素的关注商船设计，如完整稳定性，结构完整，消防安全和机动性，也必须得到解决，在海军的情况。

Density functional theory calculations were performed to study the structures and relative stability of the gadolinium complexes, Gd(H2O)n3+(n=8,9), in vacuo and in aqueous solution. The polarizable continuum model with various radii for the solute cavity was used to study the relative stability in aqueous solution.

用密度泛函理论方法研究了气相和水溶液中Gd(H2O)n3+(n=8，9)化合物的结构和相对稳定性，其中水溶剂效应利用极化连续介质方法结合多种溶质空腔模型进行模拟。

SF and collagen films were treated by negative corona discharge, homothermal surface potential decay was tested to detect the charge stability. Result showed circums- tance humidity influenced severely the surface charge stability. There were polar groups on the surface after corona discharge, and hydrogen bonds existed between these groups. On the other hand, ATR-FTIR analysis indicated the conformation transition of SF was induced by strong electric field and a part of random coil conformation was converted into β-sheet structure.

采用自制的负电晕极化装置对丝素、胶原膜进行了表面处理，等温表面电位衰减法测试材料在不同环境中表面电位的变化，发现环境湿度对材料表面电荷稳定性的影响较大；XPS光谱分析表明材料表面有极性基团产生，这些基团之间有可能会形成氢键，同时ATR-FTIR分析表明丝素的构象在强电场的作用下发生了变化，由无规线团转变为β折叠结构。

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。