This paper introduces electro - beam welding process taking a special gear for example.
本文以特殊齿轮为例介绍了电子束焊接工艺的实际应用.
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The graft regularity of grafting acrylic acid onto polyvinyl alcohol fibers preirradiated by electro - beam is studied.
研究了电子束预辐照聚乙烯醇纤维接枝丙烯酸的接枝规律.
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