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本文是参加中国铁道部和车辆公司今年 7月 2 8日至 30日在沈阳隆重召开的铸钢件干法落砂经验交流会有感而作。
This article is to participate in the Chinese Ministry of Railways and vehicle companies July 28 this year, held in Shenyang on the 30th held a steel casting dry sand experience exchange experience.