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数据
通信
业务
railw.
data
communication
service
数据业务
:
186 phrases
in 15 subjects
Air defense
1
Aviation
13
Business
5
Commerce
1
Communications
2
Computer networks
1
Earth sciences
2
Economy
1
Electronics
85
Information technology
16
Oil / petroleum
1
Rail transport
5
Space
21
Technology
8
Telecommunications
24
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