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偏导数
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偏导数
partial derivative
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feedbox
feed charging meter
feed chute
feed control
feed control
feed conversion rate
feed conversion rate--feed conversion rate(FCR)
feed conversion rate(FCR)
feed crop
feed crucifer
feed crushing
feed cut
feed cutter
feed cutting
feed defocusing
feed digestibility
feed disinfection
feed disinfector
feed disk
feed dispenser
feed distribution
feed distribution vehicle
feed drive
feed drum
feed edge
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