| 单词 | step rocket |
| 释义 | > as lemmasstep rocket step rocket n. a rocket of two or more stages. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > spacecraft > rocket > [noun] rocket1919 moon rocket1921 space rocket1928 space gun1929 step rocket1932 ion rocket1936 photon rocket1949 rockoon1953 space launcher1955 launcher1958 cosmic rocket1959 ullage rocket1961 1932 D. Lasser Conquest of Space vi. 104 The step-rocket will ascend to a far greater height than a unit rocket of the same weight. 1946 Sun (Baltimore) 23 Dec. 2/4 The ‘Tiamat’ is a ‘step’ rocket—that is, it has a rocket booster mounted on its tail. 1966 H. O. Ruppe Introd. Astronautics I. ii. 26 Optimization of step rockets poses some very interesting problems. < as lemmas |
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