... 尺寸偏向(dimension tolterance) 硼的作用(effect ofboron) 腐蚀?维护corrosion?protection) ...
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研究了尿素对固体渗硼的作用。
In this paper, the effects of urea on pack boronizing have been studied.
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。
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.
介绍了硼元素的特点及其在钢中的作用。
The characteristics of boron element and its effect in cast steel are introduced.
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