optical reflector
(1)反光镜
(2)光反射器

• filled band
• filled level
• filled shell
• filleted corner
• fill factor
• filling
• filling factor
• fillister
• fill optisal sensing device
• film adhesion
• film advance lever
• film advancing whell
• filmatic bearing
• film badge
• film base
• film camera
• film cartride chamber
• film cartridge
• film cassette
• film clip
• film coating
• film coefficient of heat transfer
• film compostition
• film contiuity
• film cooling