ISO 2471:1998被替代
Paper and board - Determination of opacity (paper backing) - Diffuse reflectance method
出版：International Organization for Standardization
专家解读视频
GB/T 1543-2005 - Modified
NBR NM-ISO 2471:2001 - Identical
NF ISO 2471:1998 - Identical
DIN 53146 (2000-04) - Similar
UNI 7624:1986 - Similar
NS ISO 2471 Ed. 1 (2004) - Identical
BS 4432-3:1980 - Similar
NS 4833 Ed. 1 (1982) - Similar
AS/NZS 1301.454s:2006 - Similar
UNE 57063:2003 - Identical
NEN ISO 2471:1998 - Identical
BS ISO 2471:1998 - Identical
JIS P 8149:2000 - Identical
