Istifoda shuda, dar tarkibi sistemhoi zamin, molni-zashita va uvarinai potencialho baroi vasl kardanai ploskhoi (az 20x4 mm to 40x5 mm) va giri (diametri az 6 to 12 mm) zamin karda va afzud kardanai zamin karda ba zamin kardi afzud karda diametri 10-12 mm.
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