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1·Pennies in particular are rarely pure copper.

一般来说，硬币很少使用纯铜制造的。

2·High-pure copper mainly comes from copper electrorefining.

高纯铜主要来源于铜的电解精炼。

3·Pure Copper base material ensures excellent heat dissipation.

纯铜基底确保散热效果。

4·Unique ultra pure copper mirror, low reflection, heat loss is small.

特有超纯铜镜面，低反射，热损小。

5·Trace lithium can improve recrystallization temperature of pure copper.

在工业纯铜中加入微量锂能提高其再结晶温度。

6·Made in pure copper, ceramics switch inside, with spray and massage function.

全铜材料，内含陶瓷片开关喷雾、按摩两功能。

7·A pure copper laser of simple structure with longitudinal discharge is reported.

我们研制了一台结构简单的纵向放电加热的铜激光器。

8·It was compared with the pure copper specimens to investigate the wear mechanism.

并与纯铜进行比较，探讨颗粒增强物对材料磨损行为影响的机理。

9·A rapid analysis method for determining the content of Zn in pure copper is given in this paper.

本文提出测定纯铜中锌的快速分析方法。

10·Pure copper base ensures excellent heat dissipation, and anodized aluminum top prevents corrosion.

纯铜基底保证良好的散热效果，阳极电镀铝质上部防止锈蚀。