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| chemical propulsion | |||
| chemical propulsion (利用推进剂化学能产生推力的推进方式) | |||
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化学推进 : 14 phrases in 6 subjects |
| Aviation | 2 |
| Earth sciences | 1 |
| General | 2 |
| Space | 7 |
| Technology | 1 |
| United States | 1 |
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