Ibha yentsimbi ekhethekileyo ekhubazekileyo yokuthunyelwa ngaphandle
Inkcazelo emfutshane:
Inxalenye yeconvex emile okwe-spiral enecandelo elithile elenziwe kumphezulu we-cylindrical okanye i-conical matrix.Imisonto yahlulahlulwe yaba yimisonto yesilinda kunye nemisonto ekhonkoni ngokwemilo yomzali;Inokwahlulwa ibe yintambo yangaphandle kunye nentambo yangaphakathi ngokwendawo yayo kumzimba womzali, kwaye inokwahlulwa ibe yintambo engunxantathu, intambo yoxande, intambo yetrapezoidal, intambo edibeneyo kunye neminye imisonto yeemilo ezikhethekileyo ngokwemilo yecandelo (imilo yezinyo).
