| http://www.w3.org/ns/prov#value | - wires having different two kinds of metal joined to each other, the insulators respectively wrapping and insulating each of the alloy wires, the protecting tube protecting a part of the alloy wires coated with the insulators, the protected part of the alloy wires being inserted in the transverse-type diffusion furnace; a plurality of extension wires extending outwardly from the transverse-type di
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