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成品图纸>三层、现代、开间20m%252525252525E4%252525252525BB%252525252525A5%252525252525E4%252525252525B8%2525252525258A、进深20m%25252525252525252525E4%25252525252525252525BB%25252525252525252525A5%25252525252525252525E4%25252525252525252525B8%252525252525252525258A