period of vibration的用法和样例：
例句
- A vibration period tends to decrease or remain constant as energy is lost, as is the case for a pendulum.
在损失能量时，振动周期倾向于减小或保持不变，如同单摆那样。 - The vibration states with different thermoelastic coefficients are compared and the effect of thermoelastic coupling on the amplitude and frequency is presented.
比较了不同热弹耦合参数对应的振动情况，得出了热弹耦合效应对振动周期和频率的影响。
