Qalab qalafsan oo dusha sare ah oo loogu talagalay geerka ballaca weyn

Korka guud ee adkaynta marsada-dhexroorka weyn, tamar-badbaadinta iyo korontada-badbaadinta, lakabka adkaynta labiska, adayga dhexdhexaadka ah, oo si wax ku ool ah u hagaajinaya iska-caabbinta xirashada iyo nolosha adeegga marshka inta la isticmaalayo.

Bakhtiintu waxay leedahay bakhti-soo-noqnoqosho aad u sarreeya, lakabka demintiisuna waa 1-3mm. Bakhtiinta soo noqnoqda ee dhexe, bakhtiinta lakabka 2-6mm.