求翻译：干净→下芯后合箱前必须除净砂芯和型腔的浮砂和粘附在砂芯间隙的干砂，以防产生砂气孔。是什么意思？

→ Clean the core after the next addition to the net before co-box sand core and cavity of the floating sand and adhesion in dry sand gap sand core, sand holes to prevent the produce.

After a clean → the next one before boxes must be inter net sand core and cavity floating sand and adhesive in the dry sand, sand core Gapped Pores to prevent sand.

After the clean -> under core gathers in front of the box to have to eliminate only the granulated substance core and the die space floats the granulated substance and the adherency in the granulated substance core gap dry sand, guards against produces green sand kfor castingsk the blowhole.

Clean must be net before → after core-in-box sand core and cavity floating sand and glue in sand core gap in dry sand to prevent sand stomata.

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