bul: диафрагма

Information
has URI	http://lexvo.org/id/term/bul/%D0%B4%D0%B8%D0%B0%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B0

Meaning
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means	(noun) a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically" diaphragm, stop