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| switch impulse; switching pulse | |||
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转换脉冲 : 31 phrases in 12 subjects |
| Air defense | 3 |
| Automobiles | 3 |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 6 |
| General | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 7 |
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