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separated isotopes
释义
separated isotopes
分离同位素
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frequency modulator
frequency moment
frequency multiplication
frequency multiplier chain
frequency multiplier circuit
frequency-multiplier klystron
frequency multiplier mixer circuit
frequency number
frequency odulation telecommunication system
frequency of access
frequency of bud-variation
frequency of collision
frequency of disease development
frequency of flood
frequency of infinite attenuation
frequency of injuries
frequency of irrigation
frequency of joints
frequency of micturition
frequency of occurences
frequency of operation
frequency of oscillation
frequency of penetration
frequency of purchase
frequency of sampling
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