middle ultraviolet band
中紫外区，中紫外波段

• acidity
• acid proof
• acid wash
• acme thread
• Acolight
• Acoustical Conduction
• acoustical hologram
• Acoustical Holography
• Acoustical Units
• acoustic beam deflector
• acoustic branch
• acoustic coupler
• Acoustic Delay Line
• acoustic diffraction grating
• acoustic dispersion
• acoustic emission wave
• acoustic field
• acoustic hologram
• acoustic holographic system
• acoustic holography
• acoustic image
• acoustic imaging
• Acoustic Impedance
• Acoustic Interferometer
• acoustic microscopy