单词	iris diaphragm
释义	iris diaphragm noun : an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens (as in a camera or microscope)
随便看	yahooism yahrzeit yahu yahve yahveh yahvism yahvist yahvistic yahvè yahwe yahweh Yahweh yahwism yahwist yahwistic yai yair yaje yajé yak yak yaka yakamik yakan yakety

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