查询词典 structure stability

Attributed to the spiro structure, the polymer exhibited a very good thermal stability and suppress the formation of aggregating/excimers.

螺结结构的导入，使PTF具有良好的热稳定性，且有效抑制分子堆叠与激发复合体的产生。

Chapter 2 is to discuss features of geological environment in mine, including its structure, existence environment, and boundary condition and slope's stability. Restrict reaction of geological environment to mining is stressfully studied.

第二章讨论了矿山工程这一特定工程背景下地质环境的特性，分别从地质环境的建造特征、结构特性、赋存环境、边界条件、边坡的稳定性等方面对地质环境进行了深入而具体的研究，重点讨论了地质环境对于矿山工程制约作用。

The stability of such system depends on maintenance of tensional integrity inside the structure, or what has come to be termed "tensegrity".

这种结构的稳定性取决于结构内部张力的完整性的保持，因而被称为张力完整性。

The mechanical property and thermal stability of cured epoxy resin were closely related to the chemical structure of hydrogenated terpinene maleic anhydride.

氢化萜烯马来酸酐的化学结构与固化物的机械强度及热稳定性密切相关。

Stability, robustness and oscillation of differenct uncertain time-delay systems are analyzed. Synthetical time-delay control schemes are proposed, including robust stabilizing control, variable structure control, robust dissipative control and so on. Industrial time-delay system model are established based on the theorematic results and industrial requirements. Pratical control algorithms and APC-software are developed and applied to practical process successfully.

在国家自然科学基金资助下，本项目对各类不确定时滞系统的稳定性分析、振动性质分析、鲁棒镇定控制器设计等问题进行了全面的理论分析，并结合流程工业生产过程的特点和企业需求，建立工业过程时滞系统模型，开发实用型的控制算法和先进控制软件，在一些典型的工业生产过程进行了成功的应用，取得了显著的经济效益和社会效益。

Its stability may extend into eclogitefacies and highpressure granulitefacies in calcic rocks. Because of its high U in its structure and high closure temperature (upper limit of amphibolitefaces), titanite is an ideal UPb dating mineral.

它在岩浆岩中主要存在于高Ca/Al比值的岩石中，在变质岩中常见于绿片岩相、蓝片岩相和角闪岩相岩石，在钙质变质岩中其稳定范围可达榴辉岩相或高压麻粒岩相。

The structure and composition of the title complexes were characterized by means of elemental analysis, EDTA titrimetric method, UV spectra and IR spectra. The fluorescence properties and thermal stability of the title complexes were also studied.

利用元素分析、EDTA配位滴定分析、红外光谱和紫外吸收光谱分析对目标物的组成与结构进行了表征，并研究了其发光性能和热稳定性。

The switching power amplifier is optimized based on the achievement of electromagnetic force, and the circuit structure of tristate power amplifier with soft-switching is designed. This circuit owns the advantages of reducing the dissipationpower on the power component and improving the speed of system dynamic response, enhancing the stability of the electromagnetic force in the final state, and the nice result is presented by the simulation. The small-signal model of the power amplifier is also established.

在实现支撑所需的电磁力基础上，对开关功率放大器电路进行了优化设计，采用三电平软开关的电路结构，以降低主功率器件的功耗、提高系统的动态响应速度、提高稳态电磁力的平稳性；仿真分析表明可以达到预期的效果；最后还建立了功率放大器的小信号模型，为控制系统的调节器设计提供了依据。

Analysis result shows that the dynamic interaction between wheel and rail and the rail-pad force of the strengthened track are little bigger than those of the unstrengthened track,the safety grades of the tracks are same,the strengthened track can benefit to decrease the displacements of all components of track structure obviously,to restrain the deformation of track effectively,and to reinforce the stability of railway,especially the lateral displacement and the gauge enlargement of the strengthened rail are about 33% of original rail.

分析结果表明：强化后轨道结构的轮轨动态相互作用力及轨枕支点压力均较强化前的相应值略大，但皆属相同安全合格等级；强化轨道结构位移大幅度降低，有效抑制轨道结构变形，增强线路稳定性，尤其是钢轨横向位移和轨距动态扩大量较强化前下降十分显著，前者仅约为后者的1/3左右；强化轨道也有利于降低轨下结构振动和减轻列车提速后对轨下基础的破坏。

The rotationally periodic analytical method is extended to the linear static stability analysis of rotationally periodic structure sustained the unsymmetrically loads (especially, the wind load or horizontally seismic load) and the relevant finite element formulations for the rotationally periodic analysis are deduced.

对旋转周期分析方法在结构静动力分析和稳定分析中的应用进行了系统而全面的总结和讨论，并将其进一步推广至承受非轴对称载荷（尤其是工程中常见的风载或水平地震载荷）的旋转周期结构的线弹性静力稳定分析中，导出了相应的旋转周期分析的有限元列式。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。