... 铁青铜;ferro-bronze 碳青铜;carbon bronze 针青铜;needle bronze ...
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A narrow steel sheet with one-folding extends out of a barrel-shaped steel jacket and the side wall of the end surface, and the narrow steel sheet is fixed with a bronze needle.
由圆桶状钢套及其端面侧壁伸出带一折的窄钢片，在窄钢片上固定有一根铜针。
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