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封闭系统
fēngbì xìtǒng
stresses
busin.
закрытая система
mech.
замкнутая система
tech.
мезокосм
;
замкнутый тракт
封 闭 系统
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17 phrases
in 9 subjects
Astronautics
1
Combustion gas turbines
1
Ecology
1
Electronics
2
General
4
Mechanics
2
Oil and gas
1
Oilfields
2
Technology
3
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