| http://www.w3.org/ns/prov#value | - The polishing method is a method such that spheroidal beads 121 are dispersed on the surface of the insulating substrate 123 as shown in FIG. 15A; a plate member 122, as shown in FIG. 15B, is arranged on the beads 121 dispersed surface of the insulating substrate 123; then the plate member is pressed and slided right, left and diagonally to rub the beads against the surface of the insulating subst
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