- hot-blast circulating duct
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кольцевой воздухопровод (доменной печи)
Англо-русский словарь технических терминов. 2005.
hot-blast circulating duct
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Air preheater — An air preheater or air heater is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process. They may be… … Wikipedia
