振子由于受到阻尼的作用，能量不守恒。分析了振子在过阻尼和临界阻尼情况下的非周期衰变运动。
Affected by damping, the energy vibrator is no longer eternally fixed. This article analyses its irregular attenuated movement in the condition of over damping and critical damping.
沟道效应的运动阻尼与系统走向混沌的临界特征。
Motion damping in channelling effects and the chaotic behaviour of a system.
在临界转速区，系统响应为周期运动，振幅相应增大。
Within the supercritical speed range, the response of the rotor is periodical motion with the increase of amplitude.
当腐蚀促进的位错发射和运动达到临界状态时，应力腐蚀裂纹形核和扩展。
Microcracks of SCC initiated when the corrosion-enhanced dislocation emission and motion reached a certain condition.
在超临界转速区，系统响应以混沌、周期分频和拟周期为主要运动形式。
But the main responses are chaotic, periodical and quasi-periodical motions in supercritical speed range.
本文提出一种分析机车横向运动稳定性的方法，即利用复模态的矩阵摄动法来计算临界速度。
This paper presents a new method of analyzing locomotive lateral stability, that is, the critical velocity is calculated by use of the complex mode matrix perturbation theory.
通过分析长螺旋钻机在切削各类土质时，钻具的角速度与土块运动机理关系，提出确定钻具临界的方法，而工程施工中钻杆的实际转速应大于临界转速，以提高钻机的工作效率。
An analysis related to various kinds of soil cutting by earth auger, this paper puts forward that running speed of frill should be faster than critical speed so as to increase the efficiency of drill.
给出了导致骑浪发生的危险临界参数值，以及周期运动和骑浪运动区域划分。
The dangerous value of control parameter which leaded to surf-riding and the domain of periodic motion and surf-riding were given.
分析了振子的阻尼运动，得到了临界阻尼的附加条件，讨论了在一定的实验误差要求范围内，欠阻尼振子比临界阻尼振子更快地回到平衡位置的问题。
The paper also discusses the fact when that certain precision requirements are met, the underdamping vibrator returns more quickly to the balance position than the critical damping vibrator.
而地球的自转效应却能减小地幔运动的临界阻力，因此它们对地幔热力不稳定性都具激发作用，而对地幔粘滞性和热传导效应，关系式表明，它们对地幔热力不稳定性都具致稳作用。
Both effects therefore can excite the motion of the mantle. Moreover, the formula reveals that both the viscosity of the mantle and heat conduction may stabilize the motion of the mantle.
本文给出了舰船以亚临界航速偏离航道中心运动时水压场的计算方法。
In this paper a calculation method of hydrodynamic pressure field on a ship operating off the centerline of a channel at a subcritical speed is presented.
本文给出了舰船以亚临界航速偏离航道中心运动时水压场的计算方法。
In this paper a calculation method of hydrodynamic pressure field on a ship operating off the centerline of a channel at a subcritical speed is presented.
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