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每日10单词
Butt straps, curvature 对接盖板,曲率
forming ends of 成型端
thickness and corrosion allowance 厚度和腐蚀裕量
welding ends of 焊接端
Carbon in material for welding 焊接用材料中的碳
Cast ductile iron vessels, design 可锻铸铁容器,设计
pressure-temperature limitations 压力-温度界限
service restrictions 使用限制
Castings 铸件
carbon steel 碳钢
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