narrow gap welding [机] 窄间隙焊 ; 狭间隙焊
narrow gap one side welding 窄间隙单面焊
narrow-gap electroslag welding 窄间隙电渣焊
narrow gap semiconductor [电子] 窄带隙半导体
narrow gap helix 窄缝螺旋线
narrow-gap submerged arc welding 窄间隙埋弧焊
narrow gap one-side automatic welding 窄间隙单面自动电弧焊 ; 窄缝单面自动电孤焊
Very narrow gap 缝隙非常窄
应用推荐