英语语法分析

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。