文中重点讨论了管壳式换热器管束中的流体弹性不稳定性。
In this paper the authors focus to discuss the fluidelastic instability in tube arrays of heat exchangers.
本文在无限大均质地层弹性不稳定渗流模型解析解的基础上，建立了与地层耦合的水平井筒压降模型。
A pressure drop model in horizontal well was established on the basis of the analytical solution of an elastic and unsteady seepage flow model in infinite reservoir.
针对发生流体弹性不稳定现象时的临界流速；不同螺旋半径上相邻管的相互影响；同一螺旋半径上、下游管的相互影响等问题作了讨论。
The problem such as the critical flow velocity at which fluid elastic instability phenomenon begin to occur, the reciprocal action on neighboring tubes in different helical radius, and that.
自由职业充满弹性和自由，然而也伴随着不稳定和工作安全问题。
With the freedom and flexibility of self-employment, however, come the trade-off s of stability and job security.
应用有限变形弹性理论分析了受内压作用的不可压热超弹性球壳发生非对称变形的不稳定性问题。
Instability of asymmetric deformations of an incompressible thermo-hyperelastic spherical shell, subjected to internal pressure, is examined within the framework of finite elasticity.
当内外股分离给缆线材料所造成的压力操作了弹性极限后，易位或者不稳定的情况就会产生，进而造成永久的变形。
When this separation strains the cable material beyond its elastic limit, instability or birdcaging occurs in the form of the permanent deformation.
为了实现对具有弹性的不稳定机械系统的控制，对弹性倒立摆的动态稳定性控制进行了研究。
For realizing the control of elastic unstable mechanical system, the dynamic stability control of an inverted flexible pendulum has been studied.
从弹箭空间摆动和弹性振动耦合的动力学模型出发，对弹箭飞行过程中的共振不稳定性问题进行了研究。
Based on the coupled dynamic model for the spatial rotation and elastic vibration of a body, the resonance unstability of projectiles in flight is studied in the paper.
目的探讨钛制弹性髓内钉治疗儿童胫骨不稳定骨折的临床疗效。
Clinical treatment of titanium elastic stable intramedullary nail fixation in children acropathy long bone fractures;
走动可以转换成运动，而环境的不稳定使我们大脑的回路以极具弹性的方式来配置，让我们能够去探索以解决问题。
Motion translates to exercise. Environmental instability led to the extremely flexible way our brains are wired, allowing us to solve problems through exploration.
结论弹性钉加尾帽固定是治疗长度不稳定型儿童股骨干骨折的有效方法，可有效降低弹性钉自股骨远端进钉点退出的风险。
Conclution TEINs and end caps are effective methods for the length-unstable femoral shaft fracture in children. These results indicated that the risk of TEINs push-out can be reduced.
摘要目的探讨弹性钉加尾帽治疗儿童长度不稳定型股骨干骨折的临床疗效。
Abstract: ObjectiveTo evaluate the outcome of Titanium Elatic Intramedullary Nail (TEINs) for treatment of length-unstable femoral shaft fracture of children.
该方法采用预测控制消除柔性机械手的弹性振动，可避免逆动力学和I/O反馈线性化控制遇到的零动力学不稳定问 题。
The predictive control is utilized to damp the flexible vibrations. The instability of the zero dynamics encountered in the inverse dynamics control and I/O feedback linearization can be avoided.
该方法采用预测控制消除柔性机械手的弹性振动，可避免逆动力学和I/O反馈线性化控制遇到的零动力学不稳定问 题。
The predictive control is utilized to damp the flexible vibrations. The instability of the zero dynamics encountered in the inverse dynamics control and I/O feedback linearization can be avoided.
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