a hand-held device used by an astronaut which expels a jet of compressed gas to provide propulsion.
| 单词 | θ110366 |
| 释义 | the world > movement > impelling or driving > [noun] > propulsion > one who or that which > propulsion gun (1) propulsion gun1958 a hand-held device used by an astronaut which expels a jet of compressed gas to provide propulsion. |
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