two mirror anastigmat
双[反射]镜消像散镜

• token
• tolerance
• tolerance and fit
• tolerance deviation
• tolerance for aberration
• tolerance for indistinctness
• tolerance in alignment
• tolerance of fit
• toluene
• tombac
• tomogram
• tomographic scanner
• tomography
• tomosynthesis
• tonality
• tonal value
• tonal wedge
• tone
• tone control
• tone reproduction
• tongs
• tongue
• Tonometer and accessories
• Tonometer sterilizer
• tonotron