中文说明：赛前超值整理放送：同济大学培训材料，多年珍藏，你值得拥有！
English Description：
Pre competition value arrangement and release: Tongji University training materials, many years of collection, you are worth having!
Pre competition value arrangement and release: Tongji University training materials, many years of c
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中文说明：赛前超值整理放送：同济大学培训材料，多年珍藏，你值得拥有！
English Description：
Pre competition value arrangement and release: Tongji University training materials, many years of collection, you are worth having!数学建模大全.rar