DICT.TW Dictionary Taiwan
3.147.86.104

Search for:
[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: Japanese-English Electronic Dictionary 和英電子辞書

 口径比
 こうけいひ
 noun (common) (futsuumeishi)
 see: Fナンバー
 aperture ratio (inverse of the f-number)
 relative aperture