f-number

常见例句

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。
When shooting, use a high F-number, this will help to blur the background and focus on the water.
拍摄过程中选用大光圈，这能模糊背景，从而关注水。
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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CENTERFORSECURITYPOLICY: Center for Security Policy The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century Page: 2