A device that converts electric signals, as from a telephone, stereo, or radio receiver, to audible sound and fits over or in the ear. 耳機一種傳遞電子信號的設備,比如從電話(huà)、立體聲或廣播接收器上傳出可聽(tīng)的聲音。這種設備嵌到耳朵上或耳朵里
A thin disk, especially in a microphone or telephone receiver, that vibrates in response to sound waves to produce electric signals, or that vibrates in response to electric signals to produce sound waves. 膜片,振動(dòng)板一種薄的圓盤(pán)(尤其是在麥克風(fēng)和電話(huà)收話(huà)器里那種)響應聲波振動(dòng)產(chǎn)生信號或者響應電信號振動(dòng)產(chǎn)生聲波