In UDC 621.8 is classed information about various machine elements and installations: bearings, shafts, gears, gearing and other forms of power transmission, materials handling and transfer equipment, cranes, lifts, excavating and dredging equipment, fastening and fixing devices (including screws, bolts and associated tools), and lubrication and lubricants. Class here information about machine elements, etc. treated generally. If they are treated as parts of specific kinds of machinery, class with the subject, adding the -1/-9 auxiliaries listed under 62.
BS 1000[621.8]-1995由英国标准学会 GB-BSI 发布于 1995-04-15,并于 1995-04-15 实施。
BS 1000[621.8]-1995 在中国标准分类中归属于: A14 图书馆、档案、文献与情报工作,在国际标准分类中归属于: 01.140.20 信息学。
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