Tests were studied to make an approach to ferroboron by ICP-AES technology.
为建立用ICP - AES技术分析测定硼铁的方法开展了试验研究。
Using a prefabricated porous ferroboron lump, a surface composite layer was made on gray cast iron matrix, with a common casting method.
通过预先制备带有孔隙的硼铁合金预制块，用普通浇注的方法，获得以灰铸铁为基的铸造表面复合材料。
Small amounts of boron were transferred from the electrode to weld metal by adding boron oxide or ferroboron powder to the electrode covering.
通过在焊条药皮中加入氧化硼或硼铁向焊缝渗入微量硼。
Small amounts of boron were transferred from the electrode to weld metal by adding boron oxide or ferroboron powder to the electrode covering.
通过在焊条药皮中加入氧化硼或硼铁向焊缝渗入微量硼。
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