useful aperture的意思|示意

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useful aperture相关例句

What some of us DSLR users don't realize until we've grown enough is just how wondrous and useful a good 50mm lens with a wide aperture is.

然而像我们这些单反相机的使用者在有足够多的经验之前,总是很难理解一个大光圈的50 mm镜头是多么的实用。

The calculated results are presented and a comparison is made regarded to the power received by the aperture, and some useful results for engineering prac...

文中给出大量计算结果,并对不同的口径分布做了比较,得到了若干具有工程意义的重要结论。