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ʱ䣺2016/9/26 1172

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СΪ1000mmX2000mmֻҪԷм趨Ϊ100mmX300mmΪ0.3ƽףǷΪ1.7ƽסŵΪ240/ƽסΪ100/ƽףڼ۸240x1.7+0.3x100=510յļ۸˽мġ
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