fineness
(1)细度
(2)钝度
(3)光洁度
(4)锐度

• optical "yardstick"
• optical zeroing
• optica multiplexing
• optic analytical instrument
• optic angle
• optica satellite
• opticator
• optic block
• optic chiasma
• optic-encoded system
• optician
• opticist
• opticity
• optic nerve fibre
• optic nerver
• optics
• optics custom fabrication
• optics Kerr cell
• optics of liquids
• optics of metals
• optics of microdensitometry
• optics of superconductor
• optics of thin film
• optidress
• optidress projector scope