①

Amplitude

振幅

The greatest displacement from the rest position

到静止位置的最大位移

A

②

Period duration

周期

Minimal time span for a complete oscillation after which a structure has reached its initial position and initial speed again

个完整的振荡的最小时间跨度，之后结构再次达到其初始位置和初始速度

T

③

Rest position

静止点

The structure's undisplaced position

结构无位移的位置

s0

Frequency

频率

Number of oscillations per unit of time

每单位时间的振荡次数

f

f = 1 / T

Angular velocity

角速度

Change of angle in the radian measure over time

以弧度计算的角度随时间的变化

ω

ω = 2 * π * f