临界速度

当穿透风风速大于第二临界速度时，Law的关于外部燃烧火焰长度的公式定性正确；

When the through draft velocity is larger than the second critical velocity , Law 's correlation for the horizontal length of the venting flame is also qualitatively accurate .

鸟撞飞机圆弧风挡玻璃的中点时风挡玻璃发生破碎的临界速度约为570&580Km／h。

The critical velocity at which the bird body impacts the glass at middle point to result in break of the glass is 570-580km / h.

该方法结合APIRP14E标准可对钻柱和井壁的冲蚀临界速度进行计算，计算研究表明可通过加载回压控制其冲蚀作用。

The critical erosion velocity of the part element can be computed in this method with the criterion of API RP 14E .

移动荷载作用下弹性半空间Timoshenko梁的临界速度

Critical velocities of Timoshenko beam on an elastic half-space under a moving load

临界速度u（mf），的计算在沸腾燃烧锅炉的设计中是很重要的。

The calculation of minimum fluidized velocity , u_ ( m / ), is important for the design of fluidized bed boilers .

半空间的Rayleigh波波速始终是一个临界速度，当荷载速度达到Rayleigh波波速时，系统响应会趋于无穷大；

Rayleigh wave speed in half-space is always a critical velocity and the response will become infinite when load speed reaches it .

给出了两相流中主要设计参数，如浓度C、流体流动系数Cd、物料颗粒在液体中的沉降速度vt、流体的临界速度vd等的计算公式及选用图表。

The article provided many equations and figures for calculation of main parameters in two-phases flow , such as concentration C , settling velocity of particle Vt , drag coefficient Cd , and deposite velocity Vd etc.

运用延续算法得到了系统Hopf分岔点和分岔后的周期解分支，据此确定了车辆系统的线性和非线性临界速度。

The Hopf bifurcation point and the periodic solution branches are obtained with continuation method , in which the linear and nonlinear critical speeds are easily determined .

研究表明，Timoshenko梁在移动荷载作用下的临界速度取决于梁的波速和半空间波速的相对关系；

It is found that the critical velocities of moving load on Timoshenko beam depend on the relative relation of wave speeds in beam and those in half-space .

本文采用广义Boussinesq理论模型，对一个由水底垂直向上伸出水面的薄柱体，在有限定度的浅水池中以跨临界速度运动时生成的浅水波进行了数值计算。

The generalized Boussinesq model is adopted to calculate the three-dimensional shallow water waves generated by a thin strut advancing near critical speed in a shallow water channel of finite width .

通过研究车辆系统常微分方程的一次近似方程的雅可比矩阵的特征值，来确定系统的Hopf分叉值即临界速度。

The Hopf bifurcation point , i. e , the critical velocity of vehicle system can be determined by studying the eigenvalues of jacobi matrix of the first order approximation equations of ordinary differential equations .

论文中，我们计算了凝聚体的量子耗散和基态能量，根据得到的原激发，我们可以得到双成分玻色-爱因斯坦凝聚的Landau临界速度。

Quantum depletion and ground state energy have been calculated in this thesis . With the obtained excitations , we can calculate the Landau critical velocity of a two-component BEC .

用建好的虚拟样机对摆振各种工况进行分析，最后由摆振临界速度与阻尼形成稳定区曲线并且与shimmyview软件计算出的结果进行对比，得出结论。

Based on the prototype , the load case of the shimmy is analyzed , and then the shimmy stability curve of critical shimmy velocity versus damping is gotten , which will be contrasted with the result gotten from the analysis with the software shimmy view to make the conclusion .

应用数值方法研究了货车转向架蛇行振动的Hopf分叉、临界速度及转变速度，表明蛇行振动存在两个Hopf分叉不变圈，一个是稳定的，另一个是不稳定的。

The Hopf bifurcations , critical speed , and transforming speed of the hunting vibration of the truck are investigated by numerical method . The results indicate that there exist two invariant circles from Hopf bifurcation , one being stable and the other unstable .

根据ALSTOM等欧洲高铁经验，临界速度计算需要考虑诸如轮对内侧距、轨距控制误差和轮轨磨耗等不利因素影响，而采用保守计算观点。

According to the high-speed rail experiences from ALSTOM and other European companies , the viewpoint of conservative calculation should be adopted since the disadvantage influences from such as the wheelset back-back distance , the controlled gauge allowance and the wheel-rail wear , etc. .

应用牛顿拉夫森迭代法确定车辆系统的平衡位置，采用QR算法求解系统雅可比矩阵的特征值，并结合二分法搜索系统平衡位置失稳时的临界速度。

The Newton-Raphson iteration method was utilized to determine the equilibrium position of vehicle system , the QR method was adopted to calculate the eigenvalues of the system Jacobian matrix and the critical speed of the system where the equilibrium position became unstable was searched by the two divided method .

采用所开发的模拟程序对压室金属流动及传热过程进行了模拟，模拟结果与FLOW-3D的计算结果以及临界速度理论作比较，两者均吻合。

The numerical simulation for liquid metal flow in the shot sleeve and heat transfer was performed by the developed model . The simulated results is well in agreement with the Flow-3D simulated ones and critical velocity .

根据高速动车组的特点，选择轮轨磨耗指数、临界速度和横向平稳性作为高速动车组车轮型面优化的3个目标函数，建立了CRH2动车组车轮型面多目标优化设计的数学模型。

According to the characteristic of high speed multiple units , choosing three functions of the critical speed , wheel / rail wear and lateral comfort as the objective functions of wheel profile multiobjective optimization model .

振动车削的运动特性与第二临界速度

The kinematic characteristics of vibration turning and the second critical speed

一种弹翼颤振临界速度的快速计算方法

A Convenient Method for Analysis the Critical Flutter Speed of Wings

跨临界速度运动扰动在浅水中兴起的波

Shallow water waves due to moving disturbance in the transcritical range

一个玻色-爱因斯坦凝聚体超流临界速度值的修正

A modification of superfluity 's critical velocity for the Bose-Einstein condensates

TDJ-GS型双临界速度减速顶的研制

Research on Model TDJ & GS Retarder for Double Critical Speed

颗粒被凝固前沿排斥的临界速度模型

The Critical Velocity Model for Pushing of Particles by the Solidification Front

这就是临界速度的意义所在。

So that 's the meaning of the critical velocity .

踏跳动作中临界速度现象的实验研究

In Take-off Movement " Critical Speed " Phenomenon Experimental Study

这是临界速度，是1>r的关系。

And this is the critical speed , which has a1-over-r relationship .

磁化等离子体中逃逸电子的临界速度

The critical velocity of runaway electrons in a magnetized plasma

大豆和苍耳的临界速度试验研究

Study of Critical Velocity of Soybean and Xanthium Sibiricum

地铁隧道火灾工况下气流临界速度的推导及应用

Derivation and Application of Critical Air Velocity in Fire Condition of Metro Tunnel