Simbi isina ngura 303 (SS 303) ndeimwe yezvikamu zveboka resimbi isina ngura. SS 303 isimbi isina ngura isingashandise magineti uye isingaomeswi. Basa razvino rinoedza kugadzirisa maparamita eCNC ekushandura zvinhu zveSS303 zvakaita sekumhanya kwespindle, mwero wekudya uye kudzika kwekucheka. Zvinoshandiswa kushandisa mapurasitiki akafukidzwa nemhepo (PVD). Chiyero chekubvisa zvinhu (MRR) uye surface roughness (SR) zvinosarudzwa semhinduro dzemhedzisiro yemaitiro ekugadzirisa. Muenzaniso weGrey-fuzzy unogadzirwa pakati pezvinobuda zvakajairwa uye grey relational grade values ​​zvinoenderana. Musanganiswa wakakodzera wekuisa maparamita ekupinda kuti uwane mhinduro dziri nani dzemhedzisiro wakasarudzwa zvichibva pane grey-fuzzy reasoning grade value yakagadzirwa. Kuongorora nzira yekusiyana kwakashandiswa kuona pesvedzero yezvinhu zvese zvinopinda mukuwana mhedzisiro yakanaka.