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成品图纸>一层、双拼、180-200%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525E3%25252525252525252525252525252525252525252525252525252525252525252525252525252525252525258E%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525A1、造价30-40%2525E4%2525B8%252587、开间20m%25E4%25BB%25A5%25E4%25B8%258A、进深10-12m