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成品图纸>三层、300%E3%8E%A1%E4%BB%A5%E4%B8%8A、造价20-30%2525252525E4%2525252525B8%252525252587、开间20m%252525252525252525252525252525252525E4%252525252525252525252525252525252525BB%252525252525252525252525252525252525A5%252525252525252525252525252525252525E4%252525252525252525252525252525252525B8%2525252525252525252525252525252525258A、进深20m%25E4%25BB%25A5%25E4%25B8%258A