专业释义英英释义
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数 - 引用次数：2 参考来源 - 凝视型长波红外折衍混合光学成像系统设计 Design of Diffractive/Refractive LWIR Staring Imaging system
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光圈值
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f-number [ 'efnʌmbə ]
- n. the ratio of the focal length to the diameter of a (camera) lens system
以上来源于: WordNet
柯林斯英汉双解大词典
f-number (also f number)
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1.
N the numerical value of the relative aperture. If the relative aperture is f8, 8 is the f-number and indicates that the focal length of the lens is 8 times the size of the lens aperture 焦距比数 [photog] → see also T-number
双语例句权威例句
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The matric characteristics and convergences on F-number space are investigated.
探讨了F数空间的度量特征及几种收敛性的关系。
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The aperture size (area of the aperture) of a lens could be calculated from focal length and the correspondent f-number.
光圈孔的大小，可从镜头的焦距与焦距比数中计算出来。
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The elapsed time for completing the task becomes a function of the partition size f(1,000,000) versus a function of the total number of records to process f(100,000,000).
完成这项任务所耗的时间变成为分区大小的函数 f(1,000,000)，而不再是要处理的总记录数的函数 f(100,000,000)。
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