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APPARATUS FOR AERATION OF FISH-BREEDING WATER BASINS IN WINTER
APPARATUS FOR AERATION OF FISH-BREEDING WATER BASINS IN WINTER
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机译:冬季养鱼流域增氧装置
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摘要
device for aeration рыбоводнык ponds in winter, comprising теплоизол ционный shell and device дл its fixation in a pond, отличающеес what in order to упрощени обслуживани ,it is further equipped wi
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