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| zero launch; zero length launching | |||
| zero-length launching (launcher, 架); zelling; zero-length (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) | |||
| 无导轨发射: 4 phrases in 2 subjects |
| Aviation | 1 |
| Space | 3 |
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