Hard-facing是什么意思

用法例句

The HYDCrMo martensite stainless steel hardfacing flux cored wire for submerged arc welding had been developed.

开发了马氏体不锈钢型HYDCrMo埋弧硬面堆焊药芯焊丝 ,其堆焊层的显微组织为马氏体 +少量残余奥氏体 ,在马氏体基体上弥散分布着细小的碳化物质点。