Chemical composition and depth profiling using negative muons of Medieval dou...
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The European Medieval double-edged sword develops in the 11th century from the Viking Age swords. Already in the 10th century, some of the finest examples of the Ulfberht type...
欧洲中世纪双刃剑于11世纪由维京时代长剑演化而来。早在10世纪，便已出现乌弗贝赫特型（Ulfberht）的部分精品实例……
