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SI supplementary unit
Until 1995, SI (International System of Units) supplementary units were:
Additional recommended knowledge
As of October 1995, the category of "supplementary units" has been abolished from the SI system of measurement, and the radian and the steradian are now considered SI derived units.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "SI_supplementary_unit". A list of authors is available in Wikipedia.|