The results show that the process is a clean process of mold and core sand foundry and does not pollute environment.

实验结果表明，该工艺不污染环境，是铸造型芯砂的清洁生产工艺。

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The results show that the process is a clean process of mold and core sand foundry and does not pollute environment.

实验结果表明，该工艺不污染环境，是铸造型芯砂的清洁生产工艺。

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