a mechanical device in a camera that controls size of aperture of the lens;
"the new cameras adjust the diaphragm automatically"
(anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix
electro-acoustic transducer that vibrates to receive or produce sound waves
例句
用作名词 (n.)
The diaphragm is between the chest and the abdomen. 横隔膜位于胸腔与腹部之间。
Because my diaphragm was destroyed. 因为我的横隔膜坏了。
经典引文
Microphones..must have some sort of diaphragm or element which responds to the sound wave.