They master arc, resistance, high-energy beam, and solid-state welding.
他们掌握电弧，热阻，高能束，和固态焊等。
The first region and the second region are either directly or indirectly joined by solid state welding to form a unitary fluid conducting part.
第一区域与第二区域通过固态焊接进行直接或间接结合，以形成整体流体传导部件。
The first and second regions are either directly or indirectly joined by solid state welding to form a unitary fluid conducting replacement part.
第一与第二区域通过固态焊接既可直接地也可间接地结合，以形成整体的流体传导置换部件。
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