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этап эксплуатации stresses
account.	operational phase
archit.	operational stage
energ.ind.	operation phase

этап эксплуатации: 40 phrases in 17 subjects

American usage, not spelling	2
Architecture	2
Aviation	2
Caspian	1
Computer networks	2
Computers	1
Electronics	1
Energy industry	11
General	2
Information technology	1
Oil / petroleum	3
Oil and gas	4
Programming	3
Quality control and standards	1
Sakhalin	1
Technology	1
Weapons of mass destruction	2