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to phrases
support operation
tech.
辅助性操作
support operations:
101 phrase
in 15 subjects
Air defense
6
Aviation
35
Communications
1
Earth sciences
1
Electronics
20
General
1
Information technology
4
Mining
1
Name of organization
3
Project management
1
Rail transport
2
Securities
2
Space
20
Telecommunications
3
United Nations
1
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