The results showed that the lanthanum rare earth alloy could be used as a new type of modifying agent for high-strength gray iron and vermicular cast iron.
结果表明，镧稀土合金可做为高强度庆铸铁和蠕墨铸铁的一种新型变质剂。
The inoculating effectiveness of rare-earth containing complex inoculants in the cylindrical cast piston ring of low-alloy gray cast iron is discussed in this paper.
本文研究了新型稀土复合孕育剂在灰铸铁简体活塞环中的孕育效果。
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