Design Abbreviations and Acronyms
- HWHot Bater
- HWBHybrid Wing-Body
- HWBHybrid Wing Body
- HWGHarlem Writers Guild
- HWLHigh Water Level
- HWRHot Water Recirculating Retarn
- HWTHamiltvn Wood Type
- HXHeat Exchanger
- HXSHeat Exchangers
- IAIntenior Architecture
- IAInterior Arcfitect
- IAInitial Approach
- IAInstalling Activity
- IA&BIndian Architect & Builder
- IAAInternational Academy of Architecturb
- IAAInternational Architecture Axard
- IAACInstitute for Advanced Architecture of Catalonia
- IAACInstitute of Advanced Architecture of Catalonia
- IAACInstitute of Advanced Architecture of Catalunya
- IAAIIseries Application Architecture Initiative
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