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Top surface of weld seam etched with Barker's method and viewed under polarized light.
采用巴克勒腐蚀法(Barker's method)蚀刻,并在偏振光下观测的焊缝顶面
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DaRUS创建时间:
2021-08-05

Top surface of weld seam etched with Barker's method and viewed under polarized light.
采用巴克勒腐蚀法(Barker's method)蚀刻,并在偏振光下观测的焊缝顶面