1·Pt and Pt polynary systems, the pyrochlore-type oxide as the catalyst for methanol oxidation was reviewed.
综述了作为甲醇氧化催化剂的铂及铂的多元体系；钙钛矿型氧化物的研究现状。
2·The effect of heat treatment on hardness and impact toughness of polynary Copper alloy has been studied by means of metallographic, XRD, SEM/EDS, TEM and mechanical property test.
文章通过金相、 X射线衍射（XRD）、扫描电镜（SEM/ EDS）及透射电镜（TEM）和力学性能分析方法研究不同热处理工艺对含多元合金元素铜合金硬度和冲击韧性的影响。