average scene reflectance
平均景色反射比

• Aperture, Clear
• aperture colour
• aperture correlation function
• Aperture Diaphragm
• Aperture Distortion
• aperture effect
• aperture efficiecy
• aperture factor
• Aperture Illumination
• Aperture Imaging
• aperture lens
• aperture-magnetic confinement
• Aperture Mask
• aperture-priority automatic exposure camera
• Aperture Ratio
• aperture setting ring
• aperture signal coupling lever
• aperture signal lever
• Aperture Stop
• aperture synthesis
• Aperture Tagging
• aperturing
• apex
• apex angle
• apex distance