1. Pakhoma akalowa a mkulu-kutentha anachita zipangizo ndi Kutentha zipangizo (monga makampani mankhwala).2. Chitseko cha ng'anjo ya mafakitale, chivundikiro chapamwamba, chivundikiro cha ng'anjo, ndi zina zotero 3. Kutentha kwa kutentha kwa ma boilers, makina opangira nthunzi ndi mphamvu za nyukiliya m'makampani amagetsi.4. Chitetezo cha moto ndi ...
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