roofbeam

roofbeam

 英

  • 網絡房梁

例句

Early Prestressing Force Producing the Prefabricate Roofbeam the Platform Design and Construct

預應力生產預制設計施工技術

The Quality Common Fault of the Joint of Roofbeam and Post in Armored Concrete Project and the Problem Method

鋼筋混凝土工程梁柱質量通病防治