About SHOBAKO SHIN'ICHIRO
About planetary atmosphere
About TIG welding
About alternating current
About feasibility
About cavity
About weld defect
About GTA welding
About blow hole
About Mars atmosphere
About feasibility
About Weld defect
About 類似
About 火星大気
About 交流
About GTA溶接
About 実験
About 低圧
About 炭酸
About ガス雰囲気
About ブローホール