precision of joint arc 接弧精度

joint-arc bracing system 连拱式支撑体系

radius of the joint arc 连接弧半径

arc-welded joint 弧焊接头

adjustable arc-joint pliers 可调弧形联合钳子

Joint electric arc welded 电弧焊接头

argon-arc welding joint 氩弧焊接头

aluminium alloy arc welded joint 铝合金电弧焊接头

arc welding joint 弧焊接头