Powerful blue lasers are producing the high-quality copper welds needed to make batteries for electric vehicles, as Richard Stevenson reports

中文翻译：

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蓝色的解决方案

理查德·史蒂文森（Richard Stevenson）报告说，强大的蓝光激光器可产生制造电动汽车电池所需的高质量铜焊缝