| 单词 | ion propulsion |
| 释义 | > as lemmasion propulsion ion propulsion n. the process of propelling or accelerating ions; spec. a mode of rocket propulsion in which thrust is generated by the ejection of ions produced inside the engine and accelerated by an electric field.As a fictional or hypothetical concept in early astronomical use. ΘΚΠ the world > movement > impelling or driving > [noun] > propulsion > rocket or jet propulsion jet propulsion1855 ion propulsion1921 reaction propulsion1935 ion drive1947 1921 Electr. World 17 Sept. 562/2 The direction of the ion propulsion at the streamer head is coincident with the direction of the combined fields. 1961 Sci. News Let. 7 Oct. 235/1 The ion propulsion system was described as the possible key to very long-range travel in deep space. 2006 Analog June 41/1 Satellites presently in orbit around Earth use ion propulsion to keep themselves in position and prevent their orbits from decaying over time. < as lemmas |
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