结论两种低贵金属合金的铸造精度良好，能够满足临床要求。
Conclusion the two low-noble alloys had good casting accuracy and could satisfy the clinical requirements.
目的对低贵金属含量合金铸造精确程度进行比较评价。
Objective To evaluate the casting accuracy of two low-noble dental alloy systems.
原料低硫高冰镍为高冰镍经磨浮-磁选分离获得的富含贵金属的磁性产品，主要含有镍合金和少量硫化物。
This magnetic matte was obtained from high grade Ni-Cu matte by floatation-magnetic separation, which enriched in precious metals, and mainly contained Ni alloys and a small quantity of sulfides.
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