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表面乾燥是一种苏联的先进经验,全国有些厂已经进行了一些试验,但所看到的资料都偏重在水玻璃型砂的表面乾燥,而对其他点结剂的表面乾燥试验报导较少。
Surface drying is a Soviet advanced experience. Some of the factories in the country have conducted some tests, but all the information we have seen is on the surface of water glass sand drying, while there are few reports on the surface drying tests of other point caking agents.