exciton recombination radiation
激子复合辐射

• many-element laser
• many line spectrum
• MAOS
• map
• maping infromation
• mapper
• mapping camera
• mapping equipment
• mapping function
• mapping IR-system
• marble
• marcroentgenogram
• margin
• marginal absorption
• marginal definition
• marginal error
• marginal focus
• marginal ray
• marginal rays
• marginal sharpness
• marginal value
• marginal zone
• margin mirror
• marhic method
• mariine surveying