标 准 编 号：DIN 1912-4-1981 简体中文标题：焊接、软钎焊和硬钎焊焊口的图形表示法.软钎焊和硬钎焊焊口和焊缝的概念和术语 繁体中文标题：焊接、软钎焊和硬钎焊焊口的图形表示法.软钎焊和硬钎焊焊口和焊缝的概念和术语 English Name：Graphical Representation of Welded, Soldered and Brazed Joints; Concepts and Terms for Soldered and Brazed Joints and Seams ...