Under 620.1 is classed information about the testing of materials, including sampling, methods of test and equip-ment, investigation of the structure of materials, material defects, corrosion, erosion, etc. Physical and chemical properties of materials, however, are classed in 53 and 54. Testing of specific materials may be denoted by colon combination with the appropriate number. Under 620.2 is classed information about commercial materials or goods, especially dangerous goods. Under 620.4 is classed information about power stations in general (not specific kinds of power production) and under 620.9 information about the economics of energy and energy sources.
BS 1000[620]-1990由英国标准学会 GB-BSI 发布于 1990-05-31,并于 1990-05-31 实施。
BS 1000[620]-1990 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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