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| ultra steel materials (【技】具有超高洁净度、超细组织、超高均匀性和超高精度的钢铁材料。亦称新一代钢铁材料或21世纪高性能结构钢。拟定的目标是强度提高一倍，使用寿命提高一倍，大幅度提高钢的耐热性、耐蚀性和加工成形性，使钢铁材料成为21世纪具有竞争力的、环境友好的主要材料。) | |||
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