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поврежденная изоляция stresses
el.	defective insulation; deteriorated insulation
повреждённая изоляция
avia.	faulty insulation
el.	defective insulation; deteriorated insulation
electr.eng.	defective deteriorated insulation
sol.pow.	fault isolation
tech.	defective insulation; deteriorated insulation; damaged insulation

повреждённая изоляция: 3 phrases in 3 subjects

Armored vehicles	1
Makarov	1
Oilfields	1