DIN EN 24937 (1992-11)现行
Determination of chromium content of steel and iron by potentiometric or visual method (ISO 4937:1986); german version EN 24937:1990
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
SS EN 24937 Ed. 1 (1991) - Identical
ISO 4937:1986 - Identical
UNI EN 24937:1992 - Identical
NBN EN 24937:1993 - Identical
I.S. EN 24937:1991 - Identical
NF EN 24937:1990 - Identical
BS EN 24937:1991 - Identical
