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科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。
frequency modulation (FM)
frequency modulation (FM)
frequency modulation (FM)
frequency modulation (FM)
frequency modulation--frequency modulation (FM)
frequency modulation--frequency modulation (FM)
frequency modulation index
frequency modulation radar
frequency modulation radar
frequency modulation radar--frequency modulation radar（FM radar）
frequency modulation radar（FM radar）
frequency modulation radio fuze
frequency modulation radio fuze--frequency modulation radio fuze（FM radio fuze）
frequency modulation radio fuze（FM radio fuze）
frequency modulation ranging fuze
frequency modulation ranging fuze--frequency modulation ranging fuze（FM ranging fuze）
frequency modulation ranging fuze（FM ranging fuze）
frequency modulation recording
frequency modulation recording--frequency modulation recording（FM recording）
frequency modulation recording（FM recording）
frequency modulation sideband fuze
frequency modulation sideband fuze--frequency modulation sideband fuze（FM sideband fuze）
frequency modulation sideband fuze（FM sideband fuze）
frequency modulation type altimeter
frequency modulation（FM）
frequency modulation（FM）
frequency modulation（FM）
frequency moment
frequency of discharge
frequency of freight quality accident
frequency offset
frequency offset
frequency-offset-lock
frequency of inspection
frequency of issue
frequency of issue
frequency of operation
frequency of serials
frequency of stage
frequency of vibration source
frequency of wind direction
frequency parameter
frequency percentage
frequency plane
frequency plot
frequency polygon
frequency polygon
frequency polygon
frequency polygon
frequency pulling
frequency pulling
frequency pushing
frequency range
frequency range
frequency rate
frequency ratio
frequency reference signal
frequency relaxation spectrum
frequency relay
frequency resolution
frequency response
frequency response
frequency response
frequency response
frequency response
frequency response
frequency response characteristic
frequency response function
frequency response function
frequency response function
frequency scale
frequency scanning
frequency scanning radar
frequency selection
frequency-sensitive rheostat
frequency-sensitive signal
frequency seriation
frequency sharing
frequency shift
frequency shift
frequency shift
frequency shift
frequency shifter
frequency shift keying
frequency sounding method
frequency spectrum
frequency spectrum
frequency spectrum
frequency spectrum
frequency spectrum
frequency spectrum
frequency spectrum
frequency stability
frequency stabilization
frequency stabilized carbon dioxide laser
frequency stabilized laser
frequency stabilized laser
frequency standard
frequency surface
frequency sweep generator
frequency table
frequency table
frequency table
frequency theory of hearing
frequency theory of probability
frequency-time pattern
frequency-time record
frequency transformer
frequency upconversion
frequency-wavenumber migration
frequency-wavenumber migration--frequency-wavenumber migration （F-W migration）
frequency-wavenumber migration （F-W migration）
frequency weighting
frequency window
frequentation
frequentative aspect
frequentative verb
frequenter
frequent flood
frequent flyer programme
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