| http://www.w3.org/ns/prov#value | - The temperature sensing device, such as a thermocouple, is encased in a molybdenum tube which is coated with successive porous layers of molybdenum, a plurality of layers of Al2 O3 --Cr2 O3 --Mo in a decreasing concentration of Mo in proceeding from the inner to the outer layers, and a layer of substantially pure Al2 O3 --Cr2 O3.
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