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discrete pulse; separated pulse |
分离脉 冲 : 33 phrases in 12 subjects |
Air defense | 7 |
Automobiles | 1 |
Construction | 1 |
Earth sciences | 1 |
Electronics | 2 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Oil processing plants | 1 |
Radio | 1 |
Space | 3 |
Technology | 13 |
Telecommunications | 1 |