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成品图纸>三层、双拼、300%252525E3%2525258E%252525A1%252525E4%252525BB%252525A5%252525E4%252525B8%2525258A、造价30-40%E4%B8%87、开间20m%25252525252525252525252525252525252525252525252525252525E4%25252525252525252525252525252525252525252525252525252525BB%25252525252525252525252525252525252525252525252525252525A5%25252525252525252525252525252525252525252525252525252525E4%25252525252525252525252525252525252525252525252525252525B8%252525252525252525252525252525252525252525252525252525258A