مجراهاي هوا - طرح و ساختمان - راهنماي آموزشي Air ducts - Design and construction - Study and teaching تهويه مطبوع - طرح و ساختمان - راهنماي آموزشي Air conditioning - Design and construction - Study and teaching تهويه مطبوع - وسايل و تجهيزات - راهنماي آموزشي Air conditioning - Equipment and supplies - Study and teaching
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