diaphragm

英 [ˈdaɪəfræm]

美 [ˈdaɪəfræm]

n. 膈; 膈膜; 横膈膜; 子宫帽(避孕用具); (机器等的)隔膜，隔板

复数：diaphragms　

Collins.1 / BNC.15737 / COCA.14283

牛津词典

noun

膈；膈膜；横膈膜
the layer of muscle between the lungs and the stomach, used especially to control breathing
子宫帽（避孕用具）
a rubber or plastic device that a woman places inside her vagina before having sex to prevent sperm from entering the womb and making her pregnant
（机器等的）隔膜，隔板
any thin piece of material used to separate the parts of a machine, etc.
（电话机、扬声器等的）膜片，膜件，振动膜
a thin disc used to turn electronic signals into sound and sound into electronic signals in telephones, loudspeakers , etc.

膈;膈膜
Yourdiaphragmis a muscle between your lungs and your stomach. It is used when you breathe.
(女性避孕用)子宫帽
Adiaphragmis a circular rubber contraceptive device that a woman places inside her vagina.

noun

a mechanical device in a camera that controls size of aperture of the lens
1. the new cameras adjust the diaphragm automatically
Synonym:stop
electro-acoustic transducer that vibrates to receive or produce sound waves
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic
Synonym:pessarycontraceptive diaphragm
(anatomy) a muscular partition separating the abdominal and thoracic cavities
Synonym:midriff