单词 | retro-system |
释义 | > as lemmasretro-system retro-system n. Brit. /ˈrɛtrəʊˌsɪst(ᵻ)m/ , U.S. /ˈrɛtroʊˌsɪst(ᵻ)m/ a system of retro-rockets.ΚΠ 1960 Interavia Nov. 1430/1 Launch the test lunar spacecraft by a ballistic rocket, letting it..plunge towards the earth with the retrosystem functioning. 1976 Science 11 June 1069/1 Mars 2 and 3..carried landers as well as retro-systems to achieve orbits. 2007 A. J. Ball et al. Planetary Landers & Entry Probes iv. 46 The retro system may need to be cut off some metres above the surface, to free-fall. < as lemmas |
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