In general waves can be propagated, or transmitted, transversely or longitudinally. In both cases, only the energy of wave motion is propagated through the medium; no portion of the medium itself actually moves very far.
- propagate [ˈprɔpəɡeit] v.传播
- transmit [trænzˈmit] v. 传导
- transversely [ˈtrænzvə:sli] adv. 横向地
- longitudinally [lɔndʒiˈtju:dinli] adv. 纵向地
- wave motion [weiv - ˈməuʃən] n.波动
- medium [ˈmi:djəm] n. 介质
