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成品图纸>三层、双拼、300%E3%8E%A1%E4%BB%A5%E4%B8%8A、造价30-40%25252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525E4%25252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525B8%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252587、开间12-14m、进深18-20m