| http://www.w3.org/ns/prov#value | - Additionally, since a part of the thermally conductive thin film layers 17 a, 17 b, and 17 c is provided so as to correspond to the position where the electronic component 3 is mounted and the remaining part thereof at the periphery of the mount position are thermally separated from each other, there is an advantage in that the heat is hardly transferred to the periphery through the printed board
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