pure copper

常见例句

Pennies in particular are rarely pure copper.
一般来说，硬币很少使用纯铜制造的。
Material:Using pure copper can get rid of forming incrustation which is caused by long-term immersion.
材料：是否使用纯铜镀铬。摆脱传统水龙头因长期浸水而产生水锈的缺点。
Until fairly recently, the only way to extract pure copper from ore was by using a process that requires large amounts of electric energy, especially if the proportion of copper in the ore is low.
直到最近，从矿石中提取纯铜的最佳方法是使用一项需要消耗大量电能的工艺，尤其是当矿石中铜含量低的时候。

Because the two materials exhibit a high thermal conductivity, they allow the device to cool more efficiently while distributing said heat -- 25 percent quicker than the pure copper in many pieces of tech.
ENGADGET: NC State researcher finds more efficient way to cool devices, looks to cut costs too
The metals industry already does a lot of this anyway: much vanadium comes from the wastes of blast furnaces converting iron ore into iron, almost all tellurium comes from the processing of copper slimes (the stuff left at the bottom of the electrolytic tank in which we make pure copper) and so on.
FORBES: Making Anti-Malaria Drugs From the Wastes of Producing Anti-Malaria Drugs
It used to be that we got all of our copper either from the very small deposits of pure metallic copper or from the larger deposits of copper sulfides.
FORBES: Peak Copper: Worldwatch Institute Gets It Wrong Again