Ubomi be-semi-gantry crane iphenjelelwa zizinto ezahlukeneyo, kubandakanywa uyilo lwekhreyini, iipatheni zokusetyenziswa, iindlela zokulondoloza, kunye nokusingqongileyo okusebenzayo. Ngokubanzi, i-semi-gantry crane egcinwe kakuhle inokuba nobomi obususela kwi-20 ukuya kwi-30 yeminyaka okanye ngaphezulu, ...
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