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成品图纸>一层、双拼、造价20-30%2525252525252525252525252525252525252525252525252525252525252525252525252525E4%2525252525252525252525252525252525252525252525252525252525252525252525252525B8%252525252525252525252525252525252525252525252525252525252525252525252525252587、开间10-12m