iris diaphragm
(an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of central opening usu. to regulate the aperture of a lens) अनुयोज्य पटल (अनुयोज्य मध्यपटल)
(an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of central opening usu. to regulate the aperture of a lens) अनुयोज्य पटल (अनुयोज्य मध्यपटल)
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