distancia de colimación óptica

translations in English

• back focal distance

• back focus

translations in French

• cote de tirage optique

translations in Italian

• backfocus

• distanza retrofocale

translations in Russian

• масштаб заднего фокусного расстояния

translations in Chinese

• 后焦距，后焦 - hou jiao ju, hou jiao

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