infra-red interference filter
红外干涉滤光片

• sectional
• sectional area
• sectional arrangement drawing
• sectionalization
• sectional view
• section pronjector
• sector
• sector arm
• sector gear
• sectorial wave
• sector shaft
• sector shutter
• secular aberration
• secular equation
• sediment
• Seebeck effect
• seed crystal
• seeder
• seedholder
• seeding
• see-in-dark rangefinder
• seeking
• Seeman-Bohlim camera
• Seeman slit
• segmented glass laser