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zero-level | |||
zero level | |||
datum level; dead level |
零电平: 51 phrases in 11 subjects |
Air defense | 1 |
Automobiles | 1 |
Aviation | 4 |
Earth sciences | 1 |
Electronics | 14 |
Information technology | 7 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Space | 6 |
Technology | 6 |
Telecommunications | 8 |