1) дуга
2) (электрическая) дуга; дуговой разряд
3) линия, дуга ( рентгенограммы )
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- breaking arc
- break arc
- buried arc
- carbon arc
- contact arc
- directarc
- electric arc
- erratic arc
- flash arc
- free-burning arc
- gas-shielded arc
- high-angle arc
- high-field-emission arc
- high-intensity electric arc
- immersed arc
- indirect arc
- interpole arc
- low-angle arc
- mercury arc
- metallic arc
- open arc
- pilot arc
- polar arc
- power arc
- reverse electric arc
- spray-type arc
- stationary arc
- submerged arc
- subtended arc
- unipolar arc
- vacuum arc
- voltaic arc
- welding arc