UNI EN 21559:1993被替代
Dentistry - Alloys For Dental Amalgam
出版：Italian Standards
专家解读视频
Gives requirements and methods of test for alloys composed mainly of silver, tin and copper, complying with the composition requirements in either the powder or tablet form, for preparation of dental amalgam.
ONORM EN 21559:1992 - Identical
NF EN 21559:1992 - Identical
DIN EN 21559 (1992-03) - Identical
BS EN 21559:1992 - Identical
I.S. EN 21559:1992 - Identical
SS EN 21 559 Ed. 1 (1993) - Identical
ISO 1559:1995 - Equivalent
