查询词典 wave velocity

Speed: the amplitude of the velocity (the length of the velocity vector) but without the direction that velocity has.

速率：速度的幅度，但是它不附带速度的方向，物理学角度讲它是一个标量。

Those problems include inverse position analysis of the machine, inverse and direct position analysis of the parallel locking mechanism, relationships of velocity and acceleration between cutter and actuators, Jacobian matrix of the machine, forward position computation of the machine, the links'velocity and acceleration of the driving chains, the links'velocity and acceleration of the locking mechanism, kinematics simulation of the machine, and so on. The Jacobian method presented in the thesis to calculate the direct position of the machine is of high efficient.

其中包括机床的位置逆解分析，平行机构的位置逆解分析，机床刀具与各主动关节之间的速度和加速度映射关系的求解，并联机床雅可比矩阵的计算，并联机床的位置正解计算，支链构件的速度和加速度计算，平行机构各构件的速度和加速度计算以及机床各运动学指标的仿真计算等。

By discussing the existent equations of mass-velocity relation, the equivalent polar coordinate equation and its Binet equation of the mass-velocity relation are given, and the expressions of the mass-velocity relation and mass-energy relation are given too, which include the forms of superluminal motion.

摘 要：通过讨论已有质速关系的方程形式，给出质速关系的等效极坐标方程及其 Binet 方程，进而给出质速关系及质能关系的几个较为具体的方程形式，包括超光速运动形式。

By a series field observation data, an empirical equation of mean velocity of viscous debris flow was got. The velocity calculated by the asymmetric coefficients, bottom slope and hydraulic radius of flow. It is good at both high resistance and low resistance area of debris flows. It is good consistent for the measuring velocity of otherwise field observation data of debris flow and viscous mudflow by this empirical equation.

由一系列野外观测资料得到的由泥石流不均匀系数、泥石流运动底部纵比降和水力半径计算的粘性泥石流运动平均速度经验公式，能适应各种类型的泥石流沟，与其它系列的观测资料对比有很好的一致性，与粘性泥流的观测资料对比也很接近。

Taking the moments of hip and knee joint as its controlled variables, the simulation of the motion equation shows that: After increasing the joint moment at the cushioning phase, the vertical velocity of the body center of mass distinctively speedup while horizontal velocity fall to some degree. Thus, the resultant velocity remains basically constant, but the result distance of long jump can be increased due to the enlargement of the angle of take-off.

以髋、膝关节肌力矩作为运动方程的控制变量，对其修改后的模拟结果表明：增大缓冲阶段的关节肌力矩后，人体重心的垂直速度得到明显提高，而水平速度则有所下降，在腾起合速度变化不大的情况下，由于腾起角的增大提高了跳远成绩。

The mean velocity distributions in turbulent boundary layers of smooth surface and two different riblet surfaces are measured with IFA300 constant-temperature anemometer in low-speed wind tunnel to validate the full development of turbulent boundary laye. Friction velocity and wall friction stress of turbulent boundary layer are obtained with the least-squares fitted curve of the sublayer velocity distribution based on Spalding formula, and virtual origin position of riblet surface can be acquired accurately.

在低速风洞中来流速度一定的情况下使用IFA300恒温热线风速仪测量了光滑表面和两种不同尺寸的脊状表面湍流边界层平均速度分布剖面，并验证了试验段湍流发展的充分性；通过应用Spalding壁面公式使用最小二乘法精准拟合了实验测量的边界层内层速度分布曲线，得到了湍流边界层壁面摩擦速度并进一步求得湍流壁面摩擦应力，较准确地计算出脊状表面的虚拟原点位置，并通过与对数律公式拟合结果比较分析，证实了该方法更加准确有效。

The methods of handing the inital velocity field, velocity singular point and velocity boundary condition have been proposed.

根据功能预测的任务，采用刚——粘塑性模型，用三维有限元模拟了辗边全过程咬料——稳定辗边——抛料。

This article introduces the technology of the soft starter for belt conveyor,and compares the working principles,advantages and disadvantages of velocity modulated hydraulic coupler ,liquid sliminess soft starter,CST,frequency conversion velocity modulation soft starter,silicon-controlled velocity modulation soft starter.

介绍了带式输送机软起动技术现状，比较了调速型液力偶合器、液体粘性软起动、CST，可控硅调压调速、变频调速技术等软起动技术的工作原理及优、缺点，展望了其发展趋势，对带式输送机系统中软起动装置的选用有一定的参考价值。

Through a typical Stamping example, compared and analyzed the node slip velocity curve and translational velocity curve. It proved the truth that the true loading rate simulating by Finite element software can reflect the slip velocity between sheet metal and die, providing the basis for the follow-up analysis in actual testing.

通过典型冲压成形实例，比较分析结点滑动速度和结点运动速度曲线，证明了有限元软件模拟的真实加载速度可以反映板料和模具之间的滑动速度，为后续的实际试验提供分析依据。

More: wind velocity, velocity of wind, air speed, air velocity

风的速度，通常以米／秒、千米／小时为单位。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。