短語詞組短語plasma micro -arc 等離子微弧plasma -arc quenched 等離子弧淬火air plasma -arc 空氣等離子弧plasma non -transferred arc 熱等離子弧powder plasma -arc surfacing 等離子弧堆焊Micro -beam Plasma-arc Welding 微束等離子弧焊micro -plasma-argon-arc welding 微束等離子氬弧焊carbon plasma arc -discharger 碳等離子體源 返回 plasma arc