1. Standard symbols for welding, brazing and nondestructive examination /
پدیدآورنده : prepared by the American Welding Society (AWS) A2 Committee on Definitions and Symbols ; under the direction of the AWS Technical Activities Committee ; approved by the AWS Board of Directors
کتابخانه: Center and Library of Islamic Studies in European Languages (Qom)
موضوع : Welded joints, Drawings,Welding, Notation
2. Standard symbols for welding, brazing and nondestructive examination /
پدیدآورنده : prepared by the American Welding Society (AWS) A2 Committee on Definitions and Symbols ; under the direction of the AWS Technical Activities Committee ; approved by the AWS Board of Directors
کتابخانه: Center and Library of Islamic Studies in European Languages (Qom)
موضوع : Welded joints, Drawings,Welding, Notation
