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Plasma arc welding

arc welding in which electric arc is formed between an electrode and the workpiece; by positioning the electrode within the body of the torch, the plasma arc is separated from the shielding gas envelope and forced through a fine-bore copper nozzle

Pronunciation
/ˈplæzmə ɑrk ˈwɛldɪŋ/
/ˈplazmə ɑːk wɛldiŋ/
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