The mineral oil sandwerecompared with tong oil sand and residue of synthetie fatty acid-bonded sand.
对该种矿物油砂的铸造工艺性能与桐油砂和合脂砂作了比较。
The result shows that used sand reduces properties of oil bonded sand.
结果表明，植物油旧砂的使用将在一定程度上恶化油砂性能。
The properties of used sand of vegetable oil bonded sand was measured.
测定了植物油砂旧砂性能，分析了植物油旧砂对油砂性能影响规律；
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