以下为句子列表：
英文: Nb is the element that must be insist in .Cr-Mo-0.V steel submerged arc welding weld metal which is demanded in ASME CODE CASE.
中文: Nb是ASME标准要求的.CrMo0.V钢埋弧焊焊缝中必须添加的元素。
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英文: On the basis of the strength design formulas of dished head in American ASME code chapter and GB0-998Steel pressure vessel,the optimum geometrical form parameters of dished head are derived.
中文: 根据美国ASME规范Ⅷ－及我国GB0—998《钢制压力容器》给出的碟形封头的强度设计公式推导了碟形封头最佳几何形状参数
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