摘要
介绍了油砂中各组元加入量对其使用性能的影响程度，通过试验确定了不同铸件优芯的最佳配方。
The degree of influence for adding amount of each component in the oil sand on its use property is introduced, the best composition of the core-sand for different castings is determined through experiment
出处
《拖拉机》
1999年第6期46-48,60,共4页
