| http://www.w3.org/ns/prov#value | - To prevent exposed PCB regions 48 (and in particular surface 52) from absorbing moisture and to otherwise protect the regions 48 (and in some cases to strengthen the MCV 44), a central region 50 of the MCV 44 is filled with a material which may, for example be provided as a dielectric material such as an epoxy.
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