单词 | focal length |
释义 | DEFINITIVE EXAMPLES 权威例句〔FL〕Focal length.(透镜的)焦距美国传统〔accommodation〕Physiology The automatic adjustment in the focal length of the lens of the eye to permit retinal focus of images of objects at varying distances.【生理学】 眼调节:眼睛瞳孔对焦距的自动调节,以获得不同距离的物体在视网膜上的成像美国传统〔bifocal〕Having two focal lengths.双焦距的美国传统〔diopter〕A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters.屈光度:透镜或棱镜折光率的一种量度,等于以米计算焦距之倒数美国传统〔focal point〕The focal length is the distance between the principal point of a lens and the focal point.焦距是透镜的主点与焦点之间的距离。外研社新世纪〔trifocal〕A lens having three focal lengths.三焦距透镜美国传统〔trifocal〕Having three focal lengths.三焦距的:有三个焦距的美国传统〔zoom lens〕A camera lens whose focal length can be rapidly changed, allowing rapid change in the size of an image.可变焦距镜头:可以快速变动焦距的照相机镜头,使图像的大小可以快速变换美国传统 |
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