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成品图纸>四层、300%252525E3%2525258E%252525A1%252525E4%252525BB%252525A5%252525E4%252525B8%2525258A、造价20-30%252525252525252525252525252525252525252525252525E4%252525252525252525252525252525252525252525252525B8%25252525252525252525252525252525252525252525252587、开间18-20m