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铜块 [tóng kuài]
copper billet
- 而铜块加工而成的止停块耐腐蚀，能长时间保持稳定。
And copper pieces from the only stop processing pieces corrosion resistance to prolonged stable. - 在长期生产实践中，又逐渐认识到自然界中存在金属铜块，于是开始采集和使用它。
In the long practical production, they found the metal –copper which existed in the nature then managed to collect and use it. - 本次实践根据聚能药包原理，采用不同尺寸的线性聚能药包，对不同厚度的铜块体进行切割。
The present cutting practice was based on the principle of energy-concentrated charge, using linear-shaped charges of different sizes to cut copper blocks with different thickness.
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