AS 2752-1985被替代
Preferred numbers and their use
出版：Standards Australia
专家解读视频
基本信息
标准编号： AS 2752-1985
发布时间：1985/4/4 0:00:00
标准类别：Standard
出版单位：Standards Australia
标准页数：12
标准简介
Incorporates three ISO Standards in the field of preferred numbers, viz. ISO 3, which sets out the preferred numbers; ISO 17, which is a guide to the use of preferred numbers; and ISO 497, which is a guide to the choice of a series of preferred numbers and of series containing more-rounded values of preferred numbers. The Standard defines preferred number and tabulates the basic series R 5, R 10, R 20 and R 40, and the exceptional R 80 series; it includes general guidance on their use, and deals particularly with the more-rounded values tabulating both a first rounding and a second rounding. An appendix discusses precision of the values and regularity of the ratio.
