Lumbar segmental instability is a temporary phase in the degenerative process of the lumbar spine.
腰椎节段性失稳是腰椎退变过程中一个暂时的阶段。
The goal of treatment is top revent chronic pain and instability. A three-phase treatment program is recommended.
治疗的目标是防止出现慢性疼痛及踝关节不稳。推荐使用三阶段治疗模式。
According to this model the instability process in plasma consists of two phases, namely, the thermal explosive phase and the steady annihilation phase.
按照这种模型，等离子体的不稳定过程包含两个相，即热暴发相和稳定湮灭相。
Modulation instability resulted from cross phase modulation(XPM) in decreasing dispersion fiber(DDF) is presented from nonlinear Schrodinger equation.
从非线性薛定谔方程出发得到了色散缓变光纤（DDF）中交叉相位调制（XPM）不稳定增益谱。
The two phase turbulent combustion steady process and high combustion instability in the liquid rocket engine are simulated with the method of computational combustion dynamics.
采用计算燃烧学的方法对发动机燃烧室内的湍流两相燃烧过程的稳定燃烧状态和高频不稳定燃烧现象进行了数值模拟。
Application of this method would make it POssible to identify instability boundary of two - phase flow under stable operation conditions of two - phase flow system.
该方法使得在稳定工况下判别两相流系统的不稳定边界和稳定裕度成为可能。
The research results show that the blocking of second phase to dislocation is the main reason to cause microcracking and final instability of the material.
结果表明第二相粒子对位错的阻塞作用是造成微裂纹产生和材料最终失稳的主要原因。
Turbulence two phase flow and combustion process in a liquid rocket engine combustor are analyzed with numerical method, and combustion instability is also studied.
采用数值模拟的方法对液体火箭发动机燃烧室内湍流两相流动与燃烧过程进行了分析，同时研究了燃烧室内高频不稳定燃烧现象。
The double shell gas puff is applied extensively in Z pinch experiments because it can reduce R-T instability during the implosion phase.
双层喷气负载作为减小瑞利-泰勒不稳定性的重要手段，在Z箍缩实验中得到广泛应用。
By means of separated model and appling system control theory, dynamic system characteristic equations of describing two-phase flow instability are derived.
根据分相模型运用系统控制的方法导出了描述两相流不稳定性的动态系统特征方程序。
It is found that the increase of oxygen vacancy content can increase the instability of the metastable tetragonal phase and accelerate the transformation to monoclinic zirconia.
结果表明：氧空位的存在与变化不仅影响着氧化锆相结构的稳定性，而且影响着氧化锆的低温相变过程。
The simulation results validate the property of phase preserving of bistatic and squinted CS algorithm and the effectiveness of compensated method of baseline instability.
通过模拟仿真验证了双基斜视CS算法的保相性和基线不稳定补偿方法的有效性。
The studies are of great importance for the research of two phase flow instability, and for design and safety of the 5 MW nuclear heating reactor.
此结果对研究两相流稳定性，对供热堆的设计和安全有重大意义。
The results show that, in case of high-order dispersion, the positive and negative quintic nonlinearity also intensifies and weakens the cross-phase modulation instability, respectively.
研究表明，在高阶色散下，正负五阶非线性的存在仍然分别对交叉相位调制不稳定性起加强和削弱的作用；
This paper present liner separated model describing two-phase flow instability.
本文提出了描述两相流不稳定性的线性分相模型。
Modulation instability gain spectrum resulted from cross-phase modulation (XPM) in decreasing dispersion fiber (DDF) is presented from nonlinear Schrodinger equation.
从非线性薛定谔方程出发得到了色散缓变光纤中交叉相位调制(XPM)不稳定性的增益谱。
Theoretical approach of two-phase flow instability can be divided into two categories: numerical analysis and approximation analysis.
两相流不稳定性理论分析方法可以分为两大类：一类是数值解析法，另一类是近似分析法。
The steam-water two-phase flow instability in vertical parallel pipes was studied experimentally in the high pressure steam-water test loop.
在高压汽水回路上对垂直并联管中汽液两相流不稳定性进行了试验研究。
Based on the theory of multi-phase media continuum mechanics, the coupling instability theory of coal-methane outburst is proposed under finite deformation.
本文在多相介质力学的理论基础上，提出了煤体有限变形下煤与瓦斯突出的耦合失稳理论。
The major dynamics of a boiler include non-linearity, non-minimum phase behavior, instability, delay and load disturbance. The traditional control strategy could not offer satisfactory result.
工业锅炉的主要动态特性包括非线性、非最小相位特征、不稳定性、时滞和负荷干扰，采用传统控制方法难以实施有效控制。
The condition and power gain spectra of modulation instability induced by the cross-phase modulation in the case of cubic-quintic nonlinearity are analyzed.
分析了三、五阶非线性共存时的交叉相位调制不稳定条件和增益谱。
Decreasing the heat flux or outlet two-phase resistance, and increasing the system pressure or inlet single-phase resistance are useful to avoid the natural circulation flow instability.
增大系统压力、减小热流密度、增加入口单相阻力、减小出口两相阻力有利于避免自然循环流量漂移的发生。
Then base on the former research platform, an simulation of the core saturation instability caused by three-phase grounding fault is processed, thus the new judgment method is validated.
并基于直流输电开发研究平台，对三相接地故障激发的铁心饱和不稳定现象进行了仿真研究，验证了该方法的正确性。
Temperature effects of symmetry energy, mechanical and chemical instability and liquid-gas phase transition are analyzed.
主要研究了同位旋非对称热核物质的对称能和系统力、化学不稳定性以及液气相变的温度效应。
An experimental result of two-phase flow instability on two parallel channel natural circulation with low steam quality is presented.
本文介绍了低干度两相流自然循环并联双通道稳定性实验研究结果。
This paper presents a linear homogeneous model describing two-phase flow instability.
本文提出了描述并联沸腾管内两相流密度波型脉动的线性均相模型。
This paper presents a linear homogeneous model describing two-phase flow instability.
本文提出了描述并联沸腾管内两相流密度波型脉动的线性均相模型。
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