diaphragmKK [ˋdaɪəˏfræm] /ˈdaɪəˌfɹæm/发音名词1横隔膜、膈肌解剖Singers learn to breathe deeply using the diaphragm.歌手要学会用横隔膜做深呼吸。2振膜、膜片声学The microphone's diaphragm vibrates and converts sound into a signal.麦克风的振膜会振动,把声音转换成讯号。3光圈、光阑摄影Closing the diaphragm gives you a much sharper background.把光圈缩小,背景就会清楚许多。4子宫帽、避孕隔膜医学She uses a diaphragm instead of taking hormonal pills.她使用子宫帽,而不是服用荷尔蒙药丸。5隔膜、膜工程A rubber diaphragm separates the two chambers of the pump.一片橡胶隔膜把泵浦的两个腔室隔开。用这个字练口说→