WIT 4- 1 Module 4Weld Joint Geometry( 第4单元 焊接接头几何形状）Welding and NDE Symbols 焊接和无损检测符号） WIT 4- 2 ANSI/AWS A3.0 - 94Standard Welding Terms and Definitions（标准的焊接术语和定义）WIT 4- 3 Introduction-1 of 2( 简介-1/2 ）l The geometry of joints and welds must be clearly stated and understood by all parties involved with fabrication （接头和焊缝的几何形状必须清楚的说明，且应让所有参与制造的部门理解）l Terminology used per A3.0 and A2.4 （使用的术语参见A3.0 和A2.4 ）l Dont use slang terms （禁用俚语）l Welding symbols are a shorthand method for clearly stating exa
