periodic frequency modulation
周期频率调制

• microcrystallite
• microcurie
• micro-cutting process
• microdensitimetry
• microdensitmetry
• microdensitometer
• microdetector
• microdetermination
• microdial
• microdisk target
• microdmain
• microdrilling
• microdrum
• microeffect
• microelectrode
• microelectronic circuit
• microelectronics
• microetch
• microexamination
• microfabrication
• microfarad
• microfiche
• microfilm
• microfilm camera
• microfilm equipment