NBN EN 196-21:1991被替代
Methods Of Testing Cement - Part 21: Determination Of The Chloride, Carbon Dioxide And Alkali Content Of Cement
出版：Belgian Standards
专家解读视频
91
UNI EN 196-21:1991 - Identical
I.S. EN 196-21:1990 - Identical
NF EN 196-21:1990 - Identical
BS EN 196-21:1992 - Identical
DIN EN 196-21 (1990-03) - Identical
ONORM EN 196-21:1992 - Identical
NEN EN 196-21:1993 - Identical
NS EN 196-21 Ed. 1 (1990) - Identical
SS EN 196-21 Ed. 1 (2004) - Identical
