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to phrases
钢系
el.
actinide series
;
actinium family
;
actinium series
钢系:
193 phrases
in 22 subjects
Advertising
1
Architecture
2
Automobiles
2
Aviation
4
Bridge construction
4
Communications
2
Consulting
2
Drilling
4
Earth sciences
1
Ecology
1
Electronics
4
General
7
Hydroelectric power stations
1
Mechanics
1
Metallurgy
74
Nautical
1
Navigation
2
Oil / petroleum
1
Oil and gas technology
1
Rail transport
4
Shipbuilding
2
Technology
72
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