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开关型 SPD
commun., railw.
switching type SPD
开关型:
76 phrases
in 23 subjects
Agriculture
2
Artificial intelligence
1
Automobiles
3
Aviation
2
Cartography
1
Computer numerical control
1
Drilling
1
Earth sciences
1
Electric machinery
1
Electronics
19
General
4
Genetics
1
Geophysics
1
Information technology
4
Mechanics
1
Metallurgy
1
Plastics
1
Project management
2
Rail transport
2
Shipbuilding
2
Space
4
Technology
19
United Nations
2
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