... low temperature resistance 耐低温性 low temperature steel electrode 低温钢焊条 low temperature stress relieving 温差拉伸消除应力，低温消除应力 ...
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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.
对含镍3．5％低温钢手工电焊条配方中稀土钇与硼的作用进行了试验研究。
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