流动型自硬性砂模

[机] fluid self-hardening mold sand

liú dòng xíng zì yìng xìng shā mó ㄌㄧㄡˊ ㄉㄨㄥˋ ㄒㄧㄥˊ ㄗˋ ㄧㄥˋ ㄒㄧㄥˋ ㄕㄚ ㄇㄛˊ