1. Samalani ngati mbali zonse zotumizira pa crane, monga ma pulleys, ma bearings ndi ma pipe groove malumikizidwe, zimapanga phokoso lachilendo (zigawozi ziyenera kudzazidwa nthawi zonse ndi mafuta kapena mafuta odzola kuti agwire ntchito), ngati atapezeka, muyenera nthawi yomweyo. fufuzani gawo lililonse Ngati si...
Werengani zambiri