Ama-oda angeziwe angama-45%
kufakwa i-pcbn efakwe ku-55 degree diamond shape D yezinsimbi eziguquguqukayo zensimbi yensimbi nensimbi eqinisiwe, imiphetho yokusika ye-cbn yenziwa nge-polycrystalline cubic boron nitride, okufakwa okukhombekayo ngamathiphu we-cbn ngamathuluzi okusika ngokunemba, asetshenziselwa i-cnc fine qeda ukwenza imishini nokujika i-roller, ukuthwala, amaphampu, ukubopha idiski yezimoto, injini ye-jet yendiza.
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