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вентиляционный колпак stresses
construct.	roof cowl; vent cap; ventilated hood; ventilator cowl; ventilation hood; ventilation cap; draft hood
forestr.	convertible hood; ross hood
mining.	ventilating cowl
railw.	metal domes (на крыше вагона)
shipb.	cowl ventilator
tech.	ventilating cap
vent.	gas ventilation hood (igisheva); vent hood (igisheva)
прож. вентиляционный колпак
shipb.	ventilating hood

вентиляционный колпак: 5 phrases in 4 subjects

Forestry	2
Mechanic engineering	1
Rail transport	1
Technology	1