IF EXIF header information for a 35mm equivalent focal length is available for a clip, the camera focal length will be set automatically.
如果exif头信息35毫米等效焦距在某一段上是有效的，相机焦距将被自动设置。
IF EXIF header information for a 35mm equivalent focal length is available for a clip, the camera focal length will be set automatically.
如果exif头信息35毫米等效焦距可供一夹，相机焦距将被自动设置。
Starting from the ray path equation, object-image relationships are found and used to determine the equivalent focal length and the principal planes of tapered GRIN fiber.
本文从光线轨迹方程出发，推导了锥形梯度折射率纤维的物像关系式，并得出了它的等效焦距和主平面位置。
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