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成品图纸>4层以上、300%252525E3%2525258E%252525A1%252525E4%252525BB%252525A5%252525E4%252525B8%2525258A、造价40-60%25E4%25B8%2587、开间20m%2525252525252525E4%2525252525252525BB%2525252525252525A5%2525252525252525E4%2525252525252525B8%25252525252525258A、进深16-18m