径向摩擦焊    radial friction welding

放射区    radical zone

射线探伤    radiographic inspection/ radiography

卷边半径    radius of flange

球面电极    radius tip electrode

焊接电流调节范围    range of welding current regulation

熔敷速度    rate of deposition/deposition rate

稀释率    rate of dilution

行走速度    rate of travel/travel speed

额定负载持续率    rated duty cycle; standard service

额定焊接电流    rated welding current

焊着率    ratio of welding area

反应钎剂    reaction flux

还原区    reducing zone

再入射流    re-entrant jet

再热裂纹    reheat crack

再引弧电压    reignition voltage

余高    reinforcement/ excess weld metal

遥控水下焊    remote controlled underwater welding

补焊    repair welding

残余氢    residual hydrogen

残余应力测定    residual stress analysis

电阻钎焊    resistance brazing

电阻焊    resistance welding (RW)

电阻焊机    resistance welding machine

拘束系数    restraint coefficient

拘束度    restraint intensity

拘束焊接    restraint welding

返修焊    rewelding

右焊法    rightward welding/backhand welding

焊波    ripple

上升特性弧焊电源    rising characteristic arc welding power source

罗伯逊止裂试验    Robertson crack arrest test

焊接机器人生产线    robot line for welding

机器人工作空间    robot working space

热轧扩散焊    roll diffusion welding

滚点焊    roll-spot welding

背弯试验    root bend test

根部凹陷    root concavity

焊根裂纹    root crack

根部锐边    root edge

钝边    root face