1) сгиб
2) дуга [c gray](электр.)
- drawing the arс
- electric arс
- electric arс cutting
- elevating arс
- holding the arс
- arс lamp
- arс manipulation
- arс of calibration
- arс oi training
- arс of visibility
- polar arс
- arс rupture
- arс stream
- striking the arс
- teethed arс
- arс welding