• The investigation of effects of rare-earth yttrium and boron, which are in the 3.5% nickel-containing steel welding electrode on low temperature toughness has been carried out.

    含镍3.5%低温手工电焊条配方稀土作用进行了试验研究。

    youdao

  • The investigation of effects of rare-earth yttrium and boron, which are in the 3.5% nickel-containing steel welding electrode on low temperature toughness has been carried out.

    含镍3.5%低温手工电焊条配方稀土作用进行了试验研究。

    youdao

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