SNV ISO 31-2:1992现行
Quantities And Units - Part 2: Periodic And Related Phenomena
出版：Swiss Standards
专家解读视频
Gives name, symbol and definition for 17 quantities and units of periodic and related phenomena. Where appropriate, conversion factors are also given.
ISO 31-2:1992 - Identical
NFX 02 202:1993 - Identical
DIN 1301-2 (1978-02) - Identical
DIN 1304-1 (1994-03) - Identical
BS 5775-2:1993 - Identical
NFX 02 302:1992 - Identical
DIN 1301-2 : 1978 - Identical
BS 5775-2(1993) : 1993 - Identical
NFX 02 202 : 1993 - Identical
NFX 02 302 : 1992 - Identical
