| http://www.w3.org/ns/prov#value | - Specifically, the absolute value of the drooping amount of the wiring board (70 mm??50 mm, the remaining ratio of the metal layer: 50%) is preferably 3.0 mm or less, more preferably 2.5 mm or less, further preferably 2.0 mm or less, particularly preferably 1.5 mm or less.
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