Perturbations

Perturbations of varied nature and time delays are unavoidable in real systems.

在实际系统中总是存在着各种干扰和一定的时滞.

In order to keep variations negligibly small, only small perturbations will be considered.

为了使变分小到可以忽略的程度, 仅考虑微小的扰动.

Perturbations of the force field will cause changes, or variations, of the displacement field.

力场的扰动要引起位移场的变化或者说变分.

Time-dependent Perturbation Theory. Transition probability. Adiabatic theorem revisited. Sinusoidal perturbations.

含时微扰论. 跃迁几率, 重温绝热理论,正旋扰动.

Perturbations of cardiac repolarization increase the risk for life-threatening arrhythmias and sudden cardiac death.

心脏复极过程的紊乱,会增高危及生命的心律失常及猝死的发生.

Angular perturbations tend to increase instead of decrease.

角扰动倾向于增加而不是减少.

The parameter uncertainty is considered during the design and the controller is robust to parameter perturbations.

在设计时考虑了系统参数不确定性,从而控制律具有一定的鲁棒性.

Under the action of universal gravitational forces the small perturbations will grow.

在万有引力的作用下,小扰动会加强.

From fluid equations, the differential equations governing the low frequency electrostatic perturbations are deduced.

从流体方程组出发, 导出了描述低频静电扰动的微分方程组.

All perturbations from normal, including vital signs and unusual symptoms, must be addressed.

必须排除对对正常所有状态如生命体征和异常症状的所有干扰.

Continuum Dynamics adds carefully timed flow perturbations from small aerodynamic tabs to break up turbulence.

连续体动力学公司根据精密计算过的时程,以小型空气动力板制造扰动,击溃机尾乱流.

Patterns and data of phase perturbations are given.

文中给出了计算实例及相位扰动量数据.