On global building sewer USES cupreous conduit is development trend.
在全球建筑上下水道用铜水管是发展趋势。
Tetrahedrite is a common cupreous sulfide mineral in the Ashele volcanic massive sulfide deposit.
新疆阿舍勒火山岩型块状硫化物铜矿床中黝铜矿广泛产出，并以锌砷黝铜矿为特征。
It must improve the regularity of the present cupreous alloys in order to reduce the rate of contact loss and make its quality reaches up to the level of excellent overseas congeneric product.
另外，对现有的银铜类合金接触线应改善它的平直度，以降低离线率，使质量达到国外同类先进产品的水平。
It must improve the regularity of the present cupreous alloys in order to reduce the rate of contact loss and make its quality reaches up to the level of excellent overseas congeneric product.
另外，对现有的银铜类合金接触线应改善它的平直度，以降低离线率，使质量达到国外同类先进产品的水平。
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