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cyclic field; cyclical field |
周期场 : 26 phrases in 13 subjects |
Advertising | 1 |
Agriculture | 1 |
Air defense | 2 |
Business | 1 |
Economy | 1 |
Electronics | 1 |
Exhibitions | 1 |
Footwear | 1 |
Metallurgy | 3 |
Physics | 1 |
Project management | 2 |
Securities | 3 |
Technology | 8 |