Njerwa ndi zida zomangira zodziwika bwino, ndipo zimagwiritsidwa ntchito kwambiri m'magawo ambiri. Monga imodzi mwa mafupa omanga, kufunikira kwa njerwa kukukulirakulira pang'onopang'ono. Inde, njirayi ndi yosasiyanitsidwa ndi kugwiritsa ntchito makina opangira njerwa. Ndi ver
Mawu Oyamba pa Makina Otchinga ● Kufotokozera mwachidule makina a Block MachinesBlock ndi ofunika kwambiri pa zomangamanga zamakono, zomwe zikuyimira makina ofunikira popanga midadada ya konkire—magawo ofunikira omwe amagwiritsidwa ntchito pomanga nyumba zolimba.