Thaum qhov nruab nrab zaus qhov chaw vuam tshuab ua haujlwm, vim qhov vuam mus ntev, suav tsis txheeb qhov cuam tshuam ntawm tam sim no siab tam sim no thiab suav tsis tau kev sib tsoo ntawm ntau pua kilograms ntawm lub siab, lub electrode kawg nto hloov pauv, uas yuav ua rau cov vuam tsis zoo. Thaum welding, ...
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