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серьёзная неисправность stresses
auto.	major failure
el.	lossage
mil.	critical defect
O&G	fundamental defect; gross defect; gross failure
oil	leading defect; major defect
qual.cont.	gross fault
railw.	severe error (Кунделев)
transp.	major defect; major failure

серьёзная неисправность: 1 phrase in 1 subject

Quality control and standards

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