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介绍了稀土元素在钢中的净化、变质和合金 化作用的新进展以及对其使用性能的改善。在此基础 上。介绍了稀土元素在焊接材料中的研究进展。
The new progress of purifying, deteriorating and alloying rare earth elements in steel is introduced, and its performance is improved. on the basis of. The research progress of rare earth elements in welding materials is introduced.