计时仪器零部件分类、名称和编号 机械手表机心零部件分类、名称和编号
Classification, terminology and numbering for parts and assemblies of the time measuring instruments - Classification, terminology and numbering for parts and assemblies of mechanical wrist watch movements
2008-07-31
GB/T 31896-2015
计时仪器零部件分类、名称和编号 手表外观件
Classification,terminology and numbering for parts and assemblies of the time measuring instruments—Watch casings
2015-09-11
GB/T 34837-2017
计时仪器零部件分类、名称和编号 石英手表机心
Classification, terminology and numbering for parts and assemblies of the time measuring instruments—Quartz wrist watch movements