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时间系统
IT
time system
时间系统
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155 phrases
in 27 subjects
Air defense
4
Automobiles
3
Aviation
17
Business
4
Communications
1
Computer networks
1
Computers
1
Construction
1
Corporate governance
1
Earth sciences
6
Economy
4
Electric machinery
1
Electronics
24
General
4
Geophysics
4
Hydroelectric power stations
1
Information technology
7
Mathematics
1
Navigation
1
Project management
1
Radio
1
Reliability
1
Securities
1
Space
27
Technology
31
Telecommunications
6
Wind Energy
1
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