wakhala akudzipereka pa kafukufuku ndi chitukuko ndi kupanga tiyi kulongedza mtengo makina kwa zaka zambiri, osati wamphamvu luso luso ndi zipangizo zotsogola kupanga, komanso anakhazikitsa kasamalidwe okhwima kupanga ndi khalidwe kuyang'anira dongosolo kuyang'anira, amene mogwira zimatsimikizira tiyi kulongedza makina. mtengo khalidwe la kupanga Nthawi zonse chimodzimodzi.

