英语词汇“iris diaphragm”是什么意思，“iris diaphragm”的读音、用法及例句翻译-烛光网

词汇	iris diaphragm
释义	iris diaphragmn.（名词） A circular device with a variable diameter, commonly used on cameras to regulate the amount of light admitted to a lens.虹彩光圈：直径可变的一种圆形装置，通常用在照像中调节进到镜头上的光量
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