A deep discussion on welding procedure qualification standard was made in this article, and some suggestion were put forward.
文章对焊接工艺评定标准进行了深入探讨，提出一些建议。
A deep discussion on welding procedure qualification standard was made in this article, and some suggestion were put forward.
文章对焊接工艺评定标准进行了深入探讨，提出一些建议。
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