摘要
本文在大学物理范围内，仅用高等数学知识，详述质点余弦振动的传递过程；由谐波定义出发，导出机械简谐纵波的波动方程；并明确谐波中介质运动的基本特征。
This paper, in the scoppe of university physics, using higher mathematic knowledge,elaborated the transmission pocess of particle cosine vibration, in turn, from the definition of harmonic wave, deduced the wave movement equation of mechanic simple harmonic wave;and pointed out the basic feature of harmonic media movement.
关键词
谐波方程
质点余弦振动
谐波
harmonic equation, particle, cosine, vibration
