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並前往https://www.safeworkaustralia.gov.au/system/files/documents/1702/bridge-and-gantry-crane-information-sheet.docx

06. Bridge and Gantry Cranes Information Sheet - Safe Work ...

What are bridge and gantry cranes? A bridge crane. See Figure 1: consists of a bridge beam or beams that are mounted to end carriages at ...

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