短語詞組短語underwater dry welding 水下焊接underwater automatic welding 水下自動焊接underwater hyperbaric welding habitat 水下高壓焊接艙underwater explosive welding 水下爆炸焊;水下爆炸焊接underwater stud welding 水下螺柱焊underwater electrical welding 水下電焊underwater wet welding 濕法焊接underwater hyperbaric welding 水下干式高壓焊接dry underwater welding 干式水下焊 返回 underwater welding