A new electrode and metal oxide surge arrester (MOA) with series air gap is developed, the gap is a pure air one and is composed by high voltage piercing electrode and MOA in itself.

研制了一种由高压穿刺电极和避雷器本体构成的纯空气间隙金属氧化物避雷器。

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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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The anticorrosion mechanism of polyamine and metal interface is formed a layer of compact metal oxide film, so that the electrode potential of metal passivation;

其防腐机理是聚胺与金属界面形成一层致密的金属氧化膜，使金属的电极电位钝化；

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