标 准 编 号:BS EN ISO 2639-2002 简体中文标题:钢.渗碳层和硬化层的深度的测定和检验 繁体中文标题:钢.渗碳层和硬化层的深度的测定和检验 English Name:Steels - Determination and verification of the depth of carburized and hardened cases