Malumikizidwe a mphira, monga zolumikizira makina, amagwiritsidwa ntchito kwambiri m'magawo monga engineering engineering, petroleum, shipbuilding, etc. Pogwiritsira ntchito, choyamba tiyenera kuweruza khalidwe lake kuti tiwonetsetse kuti ntchito yake ndi yotetezeka.Nthawi zambiri amayesedwa malinga ndi mawonekedwe, kuuma, kukana dzimbiri, stretc ...
Werengani zambiri