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срок службы машин stresses
construct.	machinery service life; service life of machinery
срок службы машины
gen.	life (и т.п.); lives (и т.п.)
auto.	mechanical life
econ.	lifetime of machine; lifetime of a machine
fin.	life of machine
Makarov.	the life of a car

срок службы машин: 8 phrases in 5 subjects

Automobiles	3
General	1
Makarov	2
Oil / petroleum	1
Refrigeration	1