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地线系统
tech.
earth system
;
grounding system
telecom.
ground system
地线系统
:
52 phrases
in 15 subjects
Agriculture
2
Air defense
5
Aviation
3
Communications
2
Earth sciences
2
Electric machinery
2
Electronics
18
Engineering geology
1
General
1
Hydroelectric power stations
2
Information technology
1
Oil / petroleum
2
Shipbuilding
2
Technology
7
Telecommunications
2
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