... Low-Alloy High-Strength Steel 低合金高强度钢 ultra-high-strength steel 以超高力钢 ; 以超高强度钢 ultimate-high-strength steel 极限高强度钢 ...
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以超高强度钢
With ultra-high strength steel
以上为机器翻译结果，长、整句建议使用 人工翻译 。
针对这两种现象，本文以D406A钢为例，系统地研究了超高强度钢及其焊接接头的断裂行为。
Aiming at these problems, taking D406A steel as an example, this paper systematically studied the fracture behavior of the ultra-high strength steel and it's welded joint.
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