We know the initial conditions, and we know it's a simple harmonic oscillation, and we want to know what the maximum displacement is going to be.
我们知道初始条件，我们知道这是简谐振荡，我们想知道，最大位移是多少。
2
The frequency response functions of relative displacement and absolute acceleration are derived under acting of harmonic ground excitation.
推导了地面简谐运动作用下的加速度和位移的频率响应函数。
3
It was found that the square wave high-voltage amplifier has the shortcomings of high power consumption and strong harmonic disturbance in displacement measurement.