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校验试验
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check test
校验试验:
61 phrases
in 16 subjects
Air defense
1
Automobiles
2
Aviation
6
Economy
1
Electric machinery
1
Electronics
4
General
1
Metallurgy
3
Oil / petroleum
1
Project management
1
Shipbuilding
5
Space
5
Technology
26
Telecommunications
1
United States
1
Wind Energy
2
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