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科学时代收录了3405121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 modulator frequency moment frequency monitor frequency multiplex
frequency multiplex{=FM} frequency multiplexing frequency multiplication Frequency multiplication frequency multiplier
frequency multiplier chain frequency multiplier, harmonic generater Frequency multipliers frequency multiplying oscillator frequency, natural
Frequency noise frequency nonselective channel frequency-nonselective fading channel frequency-nonselective fading channels frequency number
frequency of access frequency of back-up frequency of calibration frequency of commercial power frequency of concurrent events
frequency of contact frequency of damped system frequency of demand frequency of drought frequency of encounter
frequency of error frequency of every allowable term (FEAT) frequency of every allowable term{=FEAT} frequency of first harmonics frequency of first mode
frequency of free oscillation frequency offset frequency offset adjustment frequency offset compensation system frequency offset error
frequency offset estimation frequency offset generating circuit frequency of heave frequency of impulse frequency of inspection
frequency of library use frequency of light frequency of micturition frequency of mutation frequency of occurrence
frequency of operation frequency of optimum traffic frequency of optimum traffic{=FOT} frequency of oscillation frequency of payroll
frequency of periodic function frequency of pitch frequency of reference frequency of roll FREQUENCY OF ROTATION
frequency of sampling frequency of sound frequency of soundings frequency of spinning signal frequency of stars
frequency of survey frequency of the sample rate frequency of traffic frequency of training frequency of trip
frequency of vibration frequency of wave frequency of wind speed frequency output frequency pairing
frequency panel frequency parameter frequency pattern correlation frequency percentage frequency-phase characteristic
frequency-phase method Frequency/phase noise spectrum{=FNS} frequency plan frequency planning frequency plot
Frequency polygon frequency polygon frequency pool frequency-power limitation frequency power source
frequency preselection frequency primary standard frequency programs {=FPs} frequency property frequency protection
frequency pulling frequency pulling effect frequency pushing frequency quadrature amplitude modulation frequency; radio
frequency, radio frequency raiser frequency range frequency rate frequency, rated
frequency ratio frequency-ratio method frequency reconfigurable frequency record frequency recorder
frequency recovery frequency redundancy frequency reference frequency regulating capacity frequency regulating circuit
frequency regulation frequency regulation capability frequency regulation service frequency regulator frequency relation limit
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