| http://www.w3.org/ns/prov#value | - For example, one or more heat-conductive elements 18 may be constructed of a single material such as aluminum, steel, or copper, while one or more other heat-conductive elements may be constructed from two or more materials, such as a bi-metallic member having a copper portion and/or an aluminum portion, or a composite or bi-material such as polyester and aluminum or a plated ceramic material such
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