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| gaseous-fuel engine; gas motor | |||
| gaseous propellant engine | |||
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气体燃料发动机 : 15 phrases in 7 subjects |
| Automobiles | 3 |
| Aviation | 3 |
| Chemistry | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Space | 4 |
| Technology | 2 |
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