Hypernyms:reaction-propulsion engine reaction engine
Inherited Hypernyms:ion enginereaction-propulsion engineenginemotormachinedeviceinstrumentalityartifactwholeobjectphysical entityentity
单词 | ion engine |
释义 | Ion Engine nnoun.artifacta type of reaction-propulsion engine to propel rockets in space; a stream of positive ions is accelerated to a high velocity by an electric field Hypernyms:reaction-propulsion engine reaction engine Inherited Hypernyms:ion enginereaction-propulsion engineenginemotormachinedeviceinstrumentalityartifactwholeobjectphysical entityentity |
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