壳型填铁丸工艺下稀土对凸轮轴用合金铸铁组织和性能的影响
각형전철환공예하희토대철륜축용합금주철조직화성능적영향
Effect of Rare Earth on Structure and Properties of Alloyed Cast Iron Used for Camshaft Cast in Shell Mould with Iron Shot Backing
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