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並前往 https://www.oshc.org.hk/oshc_data/files/greencross/2021/Oct%202021%20-%2012_%20OSH%20Science%20%E2%80%93%20The%20Relationship%20Between%20Lifting%20Angle%20and%20Upper%20Limit%20of%20Working%20Load%20of%20the%20Slings.pdf
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