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1 transonic drag problem
проблема повышения сопротивления в области трансзвуковых [околозвуковых] скоростейEnglsh-Russian aviation and space dictionary > transonic drag problem
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2 problem
проблема; задача; трудность ( в работе)c.g. problem — проблема обеспечения требуемой центровки (ЛА)
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