斜角焊缝    oblique fillet weld

倾斜碰撞    oblique impact/ inclined impact

休止时间    off time

偏心电极    offest electrode

自清理    oneself cleaning

单面焊双面成形    one-side welding with back formation

明弧焊    open arc welding

空载电压    open circuit voltage(no load voltage)

工序    operational sequence

工作行程    operational stroke

压缩喷嘴孔径    orifice diameter

孔道长度    orifice throat length

孔道比    orifice throat ratio

高频振荡器    oscillator; HF unit

输出电抗器    out put reactor

仰焊位置    overhead position of welding

过热组织    overheated structure

过热区    overheated zone

超强匹配接头    overmatching weld joint

氧化物型熔渣    oxide melting slag

氧化焰    oxidizing flame

氧乙炔焊炬    oxy-acetylene torch

氧乙炔焊    oxy-acetylene welding

氧气电弧切割    oxy-arc cutting

氧煤气焰    oxy-coal gas flame

液氧气化器    oxygen evaporator

氧矛切割    oxygen lancing; oxygen lance cutting

氧等离子切割    oxygen plasma arc cutting

无氧焊剂    oxygen-free flux

氢氧焰    oxy-hydrogen flame

氢氧焊    oxy-hydrogen welding