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during operation stresses
gen.	в период эксплуатации (mab); на этапе эксплуатации (ART Vancouver)
comp.	в ходе эксплуатации (Nearly all countries apply the Pearson method, cathodic potential measurement, cathodic protection performance during the operation of a pipeline. RealMadrid)
product.	при эксплуатации (Yeldar Azanbayev)
progr.	на стадии эксплуатации (ssn)
scient.	в ходе работы (clck.ru dimock)
tech.	во время эксплуатации (VictorMashkovtsev)

during operation: 47 phrases in 21 subjects

Agriculture	1
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