查询词典 damping-off

The chaotic planar attitude motion of a ligid spacecraft on an elliptic orbit in the gravitational field with air drag and internal damping and its control are studied. The necessary condition of occurring chaos is established by Melnikov's method. A numerical example is presented.

研究了同时存在大气阻力和结构内阻尼的椭圆轨道上平面天平动航天器的混沌姿态运动及其控制，应用〓方法给出了出现混沌的必要条件，用数值算例进行了验证。

And the effects of foundation displacement excitation,temperature,amplitude and asexternal damping on the nonlinear vibration of elliptic paraboloid cable net with the comparison between steel cable and carbon fiber cable were discussed.At last the conclusions are obtained that the temperature have great influence on steel cable and bat not on carbon fiber cable,and the vibration characteristics of cable net using carbon fiber cables is superior to cable net using steel.

在把碳纤维索网与钢丝索网比较的基础上，讨论分析了位移激励、温度、振幅、外阻尼等因素对椭圆平面双曲抛物面碳纤维索网非线性振动的影响，得到了碳纤维索网对温度变化不敏感，而钢丝索网受温度的影响却很大，且碳纤维索网振动特性优于钢丝索网振动特性的结论。

And the different damping ratio has little influence on the input energy in the same models.

不同阻尼比对同一模型中结构总输入能的影响的幅度较小。

The equation of heat conduction with surface effect is derived by applying the minimum principle of latent heat flux to describe the temperature distribution and reveal the size-dependence of thermoelastic damping in the form of energy dissipation during the vibration process.

由热流势原理导出了包含表面效应影响的热传导方程，描述了振动过程中温度的变化分布，揭示了热阻尼在表面效应影响下的尺度相关性。

Should not be made larger than necessary since excessive erector damping causes the gyro to overshoot the vertical during erection.

也不应该做得比需要的更大，因为修正装置阻尼过大将使陀螺在修正过程中偏离垂线过多。

Although the starting points are different,the both conclusions from Dirac's cosmology and from our theory of damping scale of free currents of two classes are the same:the physical source of uniνerse evolution and of particle evolution is gravitational constant decreasing with the lapse of time,on which there has been contention for a long time.

人们对宇宙演化、粒子演化的物理根源一直存在争议。Dirac宇宙论与作者的2类自由流阻尼标度理论，虽出发点不同，但宇宙演化、粒子演化的物理根源是宇宙的引力常数随宇宙时间的推移而减小的结论却是相同的。

The electron number density does not strictly obey exponential damping law in a long period.

电子数密度在很长的一段时间内不遵循指数衰减规律。

The influences of system paramete rs, such as external damping, fluid fill ratio, on the instability of the rotor system are analysed.

准三维无粘流体模型与其它的无粘模型一样也仅能用来分析无外阻尼或外阻尼较小的部分充液转子系统的稳定性问题

This new system has a success to efficiently test the velocity, nature frequency, damping ratio, quality factor and Young's module.

实现了对微结构的运动速度、固有频率、阻尼比以及品质因数和杨氏模量等特性的准确、快速测量。

These results are also benefit to seek the ferromagnetic alloys with high damping characteristic.

为寻求高阻尼特性的铁磁性合金做了有益的探索。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。