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砂坭铸件各部所用的砂坭配合成份如表1,以供参考,表中数字,都是重量的百分比。表1砂坭配合成份
Sand 坭 castings used by various parts of the sand 坭 with ingredients as shown in Table 1, for reference, the figures in the table are the percentage of weight. Table 1 sand 坭 with ingredients