spatial frequency discrimination
空间频率鋻别

• mould
• moulded glass
• moulded lens
• moulded lens blank
• moulding die
• moulding press
• mounting cement
• mounting cup
• mounting flange
• mountion
• mountion plate
• mouthpiece
• movement
• movie
• movie camera
• moving-coil galvanometer
• moving-iron instrument
• moving light spot
• moving picture
• moving reflector
• moving wave
• moviola
• muff
• muffled glass
• mulitiple-cavity