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锁环: 212 phrases in 28 subjects |
Agriculture | 3 |
Air defense | 4 |
Angling hobby | 1 |
Automobiles | 18 |
Aviation | 7 |
Communications | 3 |
Compressors | 4 |
Drilling | 5 |
Electric machinery | 8 |
Electronics | 53 |
General | 1 |
Genetics | 2 |
Geophysics | 3 |
Information technology | 3 |
Life sciences | 1 |
Metallurgy | 5 |
Mountaineering | 2 |
Multimedia | 1 |
Nursing | 1 |
Oil / petroleum | 7 |
Rail transport | 2 |
Shipbuilding | 1 |
Space | 24 |
Technology | 45 |
Telecommunications | 2 |
Textile industry | 3 |
Weightlifting | 2 |
Wind Energy | 1 |