“T值光圈数”的概念、定义、翻译、参考文献-科学参考

单词	T值光圈数
释义	T值光圈数 Encyclopedia 艺术学镜头参数释 Transmission number, T-number, T-stopT值光圈数考虑了光线通过摄影镜头时，该镜头透过率τ的具体高低对像平面处照度影响大小的光圈数。又称T数。
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