acoustic feedbackacoustic, signalling deviceacoustic surface waveacousticalaudiolateral acousticphonicsonicvocal声: sound; voice的: 4次方是 The fourth power of 2 i ...颤声的: quavery超声的: hyperacoustic; hypersonic; hypersonle; pretersonic; supersonic; transsonic; ultrasonic传声的: soniferous下载手机词典可随时随地查词查翻译