1 ผลลัพธ์ สำหรับ *口径比*
หรือค้นหา: 口径比, -口径比-

EDICT JP-EN Dictionary
口径比[こうけいひ, koukeihi] (n) (See Fナンバー) aperture ratio (inverse of the f-number); relative aperture [Add to Longdo]

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