sight
(1)视力，视觉
(2)视野
(3)瞄准
(4)瞄准具，瞄准镜

• Abbe's sine condition
• Abbe's sine rule
• Abbe's theory of image formation
• Abbe treatment
• Abbe-type vertical metroscope
• aberrated lens system
• aberrated optics
• aberrating medium
• Aberration
• aberration balancing
• aberration blur circle
• aberration constant
• aberration correction
• aberration curve
• aberration figure
• aberration-free system
• aberration function
• aberration haze
• aberrationless
• aberration of reconstructed wave
• aberration residuals
• Aberration Sensor
• ablation
• ablative flashlamp
• ablative recording