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профилактический контроль stresses
adv.	preventive control
automat.	routine inspection
comp.	bias check; service check; service checking
econ.	checking
house.	threat monitoring
math.	checking procedure
oil	marginal check
tech.	preventive inspection; marginal checking
telecom.	preventive check

профилактический контроль: 6 phrases in 4 subjects

Mass media	2
Military	2
Oil and gas	1
Technology	1