查询词典 structure stability

Taking the underground excavation of Xiluodu Hydroelectric Power Station as an example, the rock mass structure is classified based on research on distribution of fractures Adopting the structural mechanics method and UNWEDGE program, the hat stability under single fracture, groups of fractures and fragmentized rock mass is discussed in this paper to obtain the critical stable thickness and the feature of potentially instable blocks, which can be a beneficial guidance to excavation and timbering.

文章以溪洛渡水电站地下工程为例，根据断裂分布情况的研究对岩体进行分类。采用结构力学方法和UNWEDGE程序讨论了单个裂隙，成组裂隙和岩石碎块情况下顶部的稳定性来得到临界稳定厚度和可能失稳岩块的特点，可以为挖掘和支撑工作提供有益的指导。

The mesoporous silicas showed high surface area, uniform pore wormlike pore structure and high thermal stability.

这些样品具有比表面积高，蠕虫孔道分布均匀、热稳定性高等特点。

The supporting bony structure of midface can be reconstructed with mini-titanium plate RIF,which results in a sufficient three-dimensional stability of the fractured segments and an ideal facial configuration Mini-titanium plate RIF is more convenient and reliable than wire osteosynthesis in the difficult operation fields of the infraorbital margin and zygomaticomaxillary suture.

在眶下缘、颧上颌缝区，手术野显露较差，小钛板内固定较钢丝骨间结扎更为方便可靠。

The structure and the stability during storage of the uron type urea-formaldehyde resin adhesive was studied with dynamics viscosity measure and the FTIR and DSC analysis.

用FTIR、DSC和动力学粘度测量的方法对糠醛型脲醛树脂胶粘剂结构及贮存期间稳定性进行了研究。

On the other hand, there are antinomies between structural elastic inner force analysis and members' elastic-plastic limit state design, unreasonable phenomena of strength and stability separate design in steel structure design method.

在计算机迅速发展的时代，使得人们在进行试验研究的同时，有可能通过理论分析进一步认识和发展多高层轻型钢框架二阶非弹性的计算理论，建立基于结构极限承载力的设计理论和方法，研究有效和实用的方法，以达到为轻型钢结构工程设计服务的目的。

Aiming at the ballasted continues welded track and turnout structure on the normal embankment, stability analysis model of continues welded track is established by finite element method to avoid the disadvantages of traditional methods, compile the finite element analysis program and make comprehensive analysis on the lateral deformation and vibrational characteristics caused by temperature force of the continues welded track and turnout str ucture.

本文针对有砟轨道普通路基上无缝线路及无缝道岔轨道结构，运用有限元法，建立了三维无缝线路稳定性分析模型，避免了传统理论假设过多的弊端，基于有限元分析软件，编写了有限元分析程序，对无缝线路和无缝道岔的横向变形和横向振动特性进行了全面研究，主要研究内容有：1。

Many swarm parameters have been obtained such as the electron density distribution, the energy and spatial distribution of the emitted electrons from the MHCD at various voltage and different dimension of micro-hollow cathode. Micro-hollow cathode discharges with slot and cylindrical cathode have been done, results show that pressure, cathode structure and the gas mixture will affect the stability of glow discharge. Micro-hollow cathode discharge array was obtained by individual ballasted discharge unit.

进行了槽型和孔型微空心阴极放电的实验，不同的气压、电极结构以及气体配比对放电稳定性有着明显的影响；采用分段镇流的方法，进行了微空心阴极阵列放电的实验研究，得到了均匀放电；做了大气压下MHCD自持的辉光放电研究。

The result shows that the improvement of thermal stability by Pr addition is due to the good resistance of rapidly solidified structure to grain coarsening.

研究结果表明，Pr之所以能够提高钛合金的热稳定性，是由于快速凝固过程获得的组织在高温下具有良好的抗粗化能力。

FACTS can control the parameter and structure of the AC power system flexibly and fleetly, then the system stability and reliably can be improved greatly, Unified Power Flow Controller colligates the control function of many FACTS element, and has been considered as the most creative and powerful element in FACTS.

FACTS能实现对交流输电系统参数以至网络结构的灵活快速控制，从而大幅度提高系统稳定性、可靠性，其中，UPFC综合了许多FACTS器件的灵活控制手段，被认为是最有创造性的，是功能强大的FACTS元件。

Block theory is an effective method to analyse stability of rock mass crisscrossed by geologic structure planes.

对于由地质构造面纵横切割的多裂隙岩石块体的稳定分析，块体理论不失为一种有效的分析手段。

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％。