Isosiyete yacu ya rubber tire gantry crane (RTG) yakoreshejwe neza mubikorwa byo gutwara ubwato muri Kanada. Ibi bikoresho bigezweho byateguwe kugirango bihuze ibyifuzo by’abakora ku byambu n’abatwara ibicuruzwa, bitanga umusaruro mwinshi, umutekano, kandi byoroshye. RTG ifite ubushobozi ...
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