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录像教材教辅
用于教学或教学辅导的录像制品。
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permanent grazing land
permanenthigh-intensity magnetic drum separator
permanenthigh-intensity magnetic roll-beltseparator
Permanent International Association of Navigation Congress
permanent international migration
Permanent Inter-state Committee on Draught Control in the Sahel, CILSS
permanently convergent series
permanent magnet
permanent magnet asynchronous genertor
permanent-magnet direct current motor
permanent magnet electric machine
permanent magnet focusing
permanent magnetic coupler
permanent magnetic drum separator
permanent magnetic material
permanent magnetic materials
permanent magnetic vertical separator
permanent magnetism
permanent magnet linear synchronous motor
permanent magnet starting generator
permanent-magnet synchronous motor
permanent matrix
permanent military airfield
permanent mold casting
permanent moment
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