At least this picture is worth a thousand words.

來源: 7grizzly 於 2023-04-06 20:56:52 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (0 bytes)
回答: like so, diaphragm & aperture 由 移花接木 於 2023-04-06 18:57:26
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