| http://www.w3.org/ns/prov#value | - Also, in the embodiment described above, the surface layer of the circuit board 10 is kept to ground potential, covers an area except the pad and the periphery and is composed of two sides of the ground layers 12 and 14 or four sides of the ground layers 12 and 14 and both sides of the board 10, however, the surface layer may be also composed of six sides of the ground layers 12 and 14, both sides
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