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组合气
dril.
component gas
组合 气
:
65 phrases
in 24 subjects
Agriculture
1
Automobiles
2
Aviation
3
Chemistry
1
Communications
1
Compressors
3
Earth sciences
3
Ecology
1
Electronics
2
Environment
1
General
1
Hydroelectric power stations
1
Mechanics
3
Metallurgy
1
Name of organization
1
Nautical
3
Oil / petroleum
8
Rail transport
2
Refrigeration
2
Shipbuilding
1
Space
4
Technology
17
United Nations
1
Water resources
2
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