Mchenga wophulika makina ogwiritsidwa ntchito, ayenera kumvetsetsa ndondomeko yake, kuti achepetse kulephera kwa zida, kulimbikitsa kugwiritsa ntchito zipangizo zamakono, komanso kuti ogwiritsa ntchito ambiri amvetsetse ntchitoyo, ndondomeko yotsatirayi imayambitsidwa kuti imvetsetse. Poyerekeza ndi anthu ena ochita masewera olimbitsa thupi ...
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