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成品图纸>三层、双拼、180-200%25252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525E3%252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525258E%25252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525A1、造价60-80%E4%B8%87、开间18-20m