DIN 69001-39
Machine tools; Multi-spindle heads; Protection rings Type A
现行
发布日期 :
2001-10-01
实施日期 :
BS EN 39:2001
Loose steel tubes for tube and coupler scaffolds. Technical delivery conditions
现行
发布日期 :
2001-08-15
实施日期 :
BS M 39:1972
Method for penetrant inspection of aerospace materials and components
现行
发布日期 :
1972-02-14
实施日期 :