DIN 20301:1999-01 Rock drilling operations - Terminology, units, and symbols for use in formulae

标准编号：DIN 20301:1999-01

英文标题：Rock drilling operations - Terminology, units, and symbols for use in formulae

德文标题：Gesteinsbohrtechnik - Begriffe, Einheiten, Formelzeichen

发布日期：1999-01

标准预览图