耳机earphone
高保真立体声微型耳机high fidelity stereo micro earphone
耳罩式耳机circumaural earphone【电讯】
多功能自动复述耳机multi-function auto-repeat earphone
耳塞机insert earphone【电讯】
耳机标称阻抗nominal earphone impedance【电讯】
电磁耳机magnetic earphone【电】
电容式耳机condenser earphone【电子】