who know what's the meaning of energy is transferred in the direction of the pulse as the wave progresses through the medium
问题描述：
who know what's the meaning of energy is transferred in the direction of the pulse as the wave progresses through the medium
答
who know what's the meaning of energy is transferred in the direction of the pulse as the wave progresses through the medium谁知道这是什么样子的情况意思将能量的方向进展的脉冲波通过介质...