counter grinding

English to Polish Tech/Engineering Engineering (general) patent

In order to achieve a more stable and good grinding of a surface, the abrasive paper members are distributed diametrically and evenly on the surface of the grinding disc such that the abrasive paper members here cover the greater part of the radius of the surface, entailing that the greater part of the grinding disc surface can be used for counter grinding

To fragment patentu dot. "tarczy ściernej", pojawia się to tylko raz w całym tekście, w googlu nie bardzo mogę znaleźć czegoś konkretnego, pisali Duńczycy :)

Wyżej jest napisane tak:
Hereby is ensured a stable and uniform grinding which is suited for grinding concave, convex and plane surfaces and recesses/countersinks

Więc może ma to związek z pogłębianiem?