基本解释[化学]硼粉英汉例句双语例句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。boron metal powder更多例句专业释义化学硼粉