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to phrases
block hours
stresses
avia.
полётное время
block hour
avia.
блок-час
(
Helenia
)
;
лётный час
(
Helenia
)
tech.
время в рейсе
;
рейсовое время
block hours
:
8 phrases
in 4 subjects
Aviation
3
Economy
2
Energy industry
2
General
1
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