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| 双元推进剂喷嘴 | |||
| 双元推进剂喷嘴喷头; 双射流喷头 | |||
| распылительная головка с двухкомпонентными форсунками: 4 phrases in 2 subjects |
| Astronautics | 2 |
| Technology | 2 |
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