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scaffold especially adapted to working on roofs

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[专利英汉词典]

scaffold especially adapted to working on roofs
【固定建筑物】
专门适应于顶部工作的脚手架
scaffold especially adapted to working on roofs
【固定建筑物】
专门适应于顶部工作的脚手架

是什么意思，scaffold especially adapted to working on roofs的解释，scaffold especially adapted to working on roofs的翻译