英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Aperture的结果
Aperture
(n.)
The act of opening.
Aperture
(n.)
An opening; an open space; a gap, cleft, or chasm; a
passage perforated; a hole; as, an aperture in a wall.
Aperture
(n.)
The diameter of the exposed part of the object glass of a
telescope or other optical instrument; as, a telescope of four-inch
aperture.