diaphragm

diaphragm
[ˈdʌɪəfram]
noun

a dome-shaped muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs
（哺乳动物体内分隔胸腔和腹腔的）隔膜
a thin sheet of material forming a partition
分隔薄膜
■a taut flexible membrane in mechanical or acoustic systems
（机械或音响系统中的）膜片
■a thin contraceptive cap fitting over the cervix
（避孕用的）子宫帽
a device for varying the effective aperture of the lens in a camera or other optical system
（摄影机或其他光学系统的）光圈调节器

派生
diaphragmatic
adjective
语源

late Middle English: from late Latin diaphragma, from Greek, from dia 'through, apart' + phragma 'a fence'

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