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Context "Air-wall" insulation structure provides the boiler great efficiency The thermal isolation (of the vapor tank) is done simply using air or a "wall of air". There is an air-filed space between the tank/boiler and the machine casing (wall, air space, and then another walTcTerms Source Question View the question ___________ Entry in TCTerms English-English Glossary. Rendering: 0.0776 sec.
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