金属电极弧光灯
metallic electrode arc lamp
激光深熔焊
Deep penetration laser welding
laser penetration welding
Laser keyhole weld
deep penetration welding of laser
laser deep-penetration welding
laser beam penetration welding
laser deep penetration welding
抗熔焊特性
Anti-welding Characteristic
抗熔焊性
anti-weldins
melting-welding resistance
美国熔焊协会
American Welding Society {= AWS
气熔焊
anchorage of rock and soil
全铜高频自熔焊
high-frequency all-copper self-fusible welding