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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	anisotropic liquid anisotropism anisotropous anisotropy anisum anisyl anisyl alcohol anither anito anjan ankara ankaramite ankaratrite anker ankerite ankh anking ankle ankle anklebone ankle boot ankle-deep ankle jerk ankle strap anklet

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