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AS 2752-1985被替代
Preferred numbers and their use
出版：Standards Australia
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基本信息
標(biāo)準(zhǔn)編號： AS 2752-1985
發(fā)布時間：1985/4/4 0:00:00
標(biāo)準(zhǔn)類別：Standard
出版單位：Standards Australia
標(biāo)準(zhǔn)頁數(shù)：12
標(biāo)準(zhǔn)簡介
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.
