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Metallurgy
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阀挡
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挡渣阀门
slag-stopping valve
(【技】分转炉挡渣阀门和电弧炉挡渣阀门。转炉挡渣阀门安装在转炉出钢口外,是一种耐火材料质挡渣滑动阀板,其结构和钢包滑动水口相类似。电弧炉炉底出钢时使用开闭式挡渣阀门。)
阀门挡板
valve guard
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