| http://www.w3.org/ns/prov#value | - The measurement of spheroidal projections was performed in such a manner as to select three circumferential areas at upper, medium and lower portions in the longitudinal direction for one cylindrical substrate, selecting three measuring points for each area, i.e., nine measuring points in total, and summing the number of spheroidal projections having a diameter of 20 ??m or greater and existing wi
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