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aperture

['æpəʧə] 名词

天线和波导

lens-opening f, opening f

aperture ['æpəʧə] 形容词

刑法, 法律, 国际法

maskergat; foramen; orificium

自然科学, 电子产品

apertuuroppervlak van de collector

运输, 机械工程

通讯, 电子产品

英语词库

aperture ['æpəʧə] 名词

A measure of the width of the opening allowing light to enter a camera. The apparent diameter of a lens viewed from the position of the object against a diffusely illuminated background is called the "effect aperture". The ratio of focal length of a lens to its "effective aperture" for an object located at infinity is called the "relative aperture", or "f/number". Larger apertures allow more light to enter a camera, hence darker scenes can be recorded. Conversely, smaller apertures allow less light to enter, but have the advantage of creating a large depth of field. See also shutter speed.

缩写, 石油/石油

aperture distribution

: 5 短语, 2 学科

天线和波导	1
电子产品	4

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