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1·He says a little machining needs to be done on the cathode tube, making a threaded bolt hub that is welded to the tube via an inert gas shield welder, or tig.

他说，一点点加工需要做的阴极管，螺纹螺栓作出枢纽这是焊接管通过一个惰性气体保护焊机，氩弧焊或。