介绍了铜钨粉末烧结材料的性能特点，以及用此材料制成的电极和导电咀在焊按生产中的使用效果。
The performance features of copper-tungsten sintered materials and operating effects of electrode and nozzle made of the materials in welding production have been introduced.
研究了稀土对电气铁路电车线用纯铜硬度、导电性、 耐磨性、耐蚀性的影响。结果表明，随稀土加入量的不同，上述性能都有一定程度的变化。
This paper studied the effects of rare earth elements on the properties(such as hardness, electrical conductivity and resistance to corrosion)of pure copper used in touching wire of electric railway.
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