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| 起始长度; 零长度 | |||
| 零长 | |||
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| 零长度 | |||
| 零长发射; 无导轨发射 (从飞机或地面的发射器发射火箭，不经过导轨上加速进入空中) | |||
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zero -length : 35 phrases in 10 subjects |
| Astronautics | 2 |
| Aviation | 8 |
| Construction | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Oil / petroleum | 2 |
| Polymers | 1 |
| Space | 11 |
| Technology | 7 |
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