型芯砂

shí yàn jié guǒ biǎo míng gāi gōng yì bù wū rǎn huán jìng shì zhù zào xíng xīn shā de qīng jié shēng chǎn gōng yì

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。

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