查询词典 dynamic condition

The results show that the flow stress decreases with increasing deforming temperature and increases with increasing strain rate. The flow stress of the alloy during hot compression deformation can be described by constitutive equation in hyperbolic sine function with a hot deformation activation energy of 196.27 kJ/mol. Partial recystallization takes place in the alloys deformed at a high temperature or at a low strain rate, and large number of dislocations and subgrains are observed in the alloy. The elongated grains observed in the samples coarsen with increasing temperature and decreasing strain rate. Correspondingly, the subgrain size increases and the dislocation density decreases. The main soften mechanism of the alloy transforms from dynamic recovery to dynamic recrystallization.

结果表明：Al-Cu-Mg-Ag耐热铝合金在热压缩变形中的流变应力随着温度的升高而减小，随着应变速率的增大而增大；该合金的热压缩变形流变应力行为可用双曲正弦形式的本构方程来描述，其变形激活能为196.27kJ/mol；在变形温度较高或应变速率较低的合金中发生部分再结晶，并且在合金组织中存在大量的位错和亚晶；随着温度的升高和应变速率的降低，合金中拉长的晶粒发生粗化，亚晶尺寸增大，位错密度减小，合金的主要软化机制逐步由动态回复转变为动态再结晶。

The paper includes:The author calculate the structures inner force and displacement of the free end , analyze the influence of the height and the value of pretress of cable by making use of ANSYS 9.0 soft, pose the concept of critical prestress,conclude the function relation between displacement of the free end, initial strain and the height of cable ,analyze the dynamic properity and point out that Newmark-β method should be adopted when we analyze the dynamic properity of the cable-stayed spatial structure with direct integral test to guarantee the contribution of high mode,finally conclude the functional relation among coefficient of earthquake inner force, initial strain and the height of cable, wish to get some helpful conclusion applied to cable-stayed spatial truss design.

本文系统介绍了斜拉空间桁架竖向地震反应的分析理论与方法、详细分析了斜拉空间桁架结构在静力和竖向地震作用下的受力性能，主要内容包括：利用通用有限元软件ANSYS9.0计算了斜拉空间桁架在静力和竖向地震作用下内力及自由端位移分布规律并得出地震内力系数与节间位置、预应力以及斜拉索高度之间的函数关系；详细分析了斜拉索中施加的预应力以及斜拉索高度的变化对于该种结构内力及自由端位移的影响并提出了斜拉空间桁架的临界预应变概念，进而得到了自由端位移与初始预应变以及斜拉索高度的函数关系，即：△=-(40h+2180)ε+9.8；分析了该种结构的动力性能，并指出：在时域内采用直接积分法计算该种结构的动力响应时，应该考虑采用不引起振幅率减小的Newmark-β法，以保证高阶模态响应的贡献仍然保留在响应中而不致于被忽略。

With the raise of a calculation method on dynamic friction coefficient of downhole tubing, the calculating accuracy of vertical conduit flow pressure is strengthened for a gas well, which promotes the dynamic analysis and prediction on gas well production.

气井井下油管动态摩阻系数计算方法的提出，提高了气井垂管流动压力计算的精度，对气井生产动态分析和预测起到了很好的推动作用。

By making use of multi-points backward pressure of one dry gas well, this paper introduces how to confirm dynamic friction coefficient of downhole tubing at the exact moment through stable testing material, gives the productivity and the corresponding bottom hole pressure by using productivity equation, calculates wellhead pressure in combination with dynamic friction coefficient of tubing, establishes the correct wellhead outflow performance equation for this well, draws out wellhead outflow performance curve and discusses how wellhead outflow performance equation or wellhead outflow performance curve changes with the decrease of formation pressure or the change of wellhead outflow performance curve.

借助1口干气井的多点回压法试井资料，介绍了如何利用气井稳定试井资料，确定该气井此时此刻井下油管动态摩阻系数；利用产能方程给出产量和对应的井底压力，结合油管动态摩阻系数计算井口压力，建立该井准确的井口流出动态方程并编绘井口流出动态曲线；讨论了随着地层压力递减和井下油管动态摩阻系数变化规律，井口流出动态方程或井口流出动态曲线的变化规律。

In allusion to dynamic nonlinear large-scale industrial processes, to bring up gained the method of decentralized identification for the strong consistency estimates of the divisible steady-state models, it is used that property of polynomial can infinitely approach to the nonlinear function and in optimization processes use step signals as input signals, the divisible steady-state models of dynamic nonlinear large-scale industrial processes, and the cognizable conditions are obtained.

针对动态非线性大工业过程，提出了得到其可分稳态模型强一致性估计的分散辨识方法；利用多项式对非线性函数的无限逼近的性质和优化过程中设定点的阶跃信号作输入激励信号，获得了动态非线性大工业过程的可分稳态模型和可辨识的条件。

A new calculation method of dynamic torque of coiler is introduced. The method simplifies calculation process of dynamic torque and improves calculation accuracy of inertia moment, and it does not need the parameters given by coiler designers.

本文介绍了一种卷取机动态转矩计算的新方法，该方法不但简化了动态转矩的计算过程，提高了转动惯量的计算精度，而且计算过程的参数不再依赖于设备设计者所给出的参数。

The optimized velocity of flow in dynamic adsorption is tenth of the volume of the resin columniation per minute and the adsorbed volume of the solution which contain 101μg/ml activity component of 2507 is 65 time of the volume of the resin columniation. The dynamic adsorption capacity of per gram resin is 9494μg/g, and the adsorption rate is almost 100％ because the hydrogen bond may be formed in the adsorption process.

动态吸附最佳的吸附流速为每分钟十分之一个柱体积，在此条件下，可以吸附相当于约65个柱体积的有效组分浓度为101μg／ml的溶液，每克树脂的动态吸附量为9494μg／g，因为可能在吸附过程中有氢键生成，所以吸附率几乎为100％。

However, it is extremely difficult to construct an accurate lateral dynamic model for a vehicle due to the complicacy of the dynamic model.

然而，车辆动力学模型的复杂性，用复杂模型设计出的控制器也是复杂的，且需要多个传感器对多个物理量进行检测，使其很难在实际车辆中应用。

All of the computation and dynamic control problems of the biped robots, such as dynamic modelling, computation of ZMP, mass center and driving torques, as well as impact between the robot and ground, can be solved by using DYSISBL.

第二章从控制的角度讨论了两足机器人的综合设计问题。为使机器人能在非结构环境下实现动态行走，设计了两足机器人多级递阶控制系统。

Based on this method, the consistent linearization dynamic equations of flexible body including"dynamic stiffening terms" are established.

以该方法为基础，建立了包含"动力刚化项"的柔性体一致线性化动力学模型。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。