| http://www.w3.org/ns/prov#value | - This term designates such products as electrical, chemical, mechanical, structural, and thermal wares when they are vitreous. (See also, Alumina porcelain, Cordierite porcelain, Forsterite porcelain, Steatite porcelain, Titania porce??lain, and Zircon porcelain.) (ASTM C 242).
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