As tingting bilong wanpela 'hollow drill bit'
Jul 02, 2025
Larim wanpela toksave
As tingting bilong wanpela 'hollow drill bit' em olsem 'hollow center' i larim ol i putim wara bilong katim. Dispela wara i save wok olsem wanpela 'coolant' na 'lubricant', na i save daunim 'friction' na 'wear' bilong mekim wok bilong katim i kamap gutpela. Na tu, 'hollow structure' i larim ol long rausim ol 'chips' we i kamap long taim bilong wokim masin, na dispela i daunim hevi long kwaliti bilong masin.