| 单词 | rocket motor |
| 释义 | > as lemmasrocket motor rocket motor n. = rocket engine n.See the note at rocket engine n. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > rocket rocket engine1908 rocket motor1927 rocket tube1932 1927 Pop. Sci. Monthly Sept. 43/2 Hardly more than an hour after leaving New York you are over Paris; the craft slows, and descends, and auxiliary rocket motors bring it gently to the earth. 1947 Jrnl. Brit. Interplanetary Soc. 6 107 The rocket motor can be divided into..the propellant injectors, combustion chamber and expansion nozzle. 1977 Engin. Materials & Design Aug. 25/1 In rocket motors extremely high temperatures are developed (up to 3500°C). 2009 Sci. Amer. (U.K. ed.) Feb. 48/3 The probe's rocket system..is highly efficient, requiring only one tenth of the fuel that a chemical rocket motor would have needed to reach the asteroid belt. < as lemmas |
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