vibrating例句
A
vibrating membrane in the ear helps to convey sounds to the brain.
耳膜的振动帮助声音传送到大脑.
In wind instruments the sound is produced by a
vibrating air column.
管乐器的声音是由振动的气柱产生的.
Stationary waves are also produced in
vibrating columns of air.
空气柱振动时也能产生驻波.