| http://www.w3.org/ns/prov#value | - The inorganic surface layer may be semi-transparent, i.e., exhibits a reflectivity of from 18 to 30% as measured according to the ECMA Standard Reflectivity Test Method for 210 mm DVD-ROM. Gold, silicon oxide, and silicon carbide are examples of compounds that are used to form semi-transparent layers on polycarbonate surfaces.
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