propulsion
英 [prə'pʌlʃ(ə)n]
美 [prə'pʌlʃən]
IELTS GRE TOEFL CET6
1、pro- "forward" + puls- "drive, push" + -ion.
2、含义：push forward, drive forward, drive forth.
- propulsion (n.)
- 1610s, "expulsion," noun of action formed from propuls-, past participle stem of Latin propellere "to propel" (see propel). Meaning "act of driving forward, propulsive force" first attested 1799.
- 1. The nineteenth century witnessed a revolution in ship design and propulsion.
- 19世纪船舶设计和船舶动力领域发生了重大的变革。
来自柯林斯例句
- 2. Interest in jet propulsion was now growing at the Air Ministry.
- 航空部对喷气推进的兴趣正在增加。
来自辞典例句
- 3. The liquids employed for rocket propulsion are called propergols.
- 用于火箭发动机的液体称为液体火箭推进剂.
来自辞典例句
- 4. The propulsion system consists of five F - 1 engines.
- 推进系统包括五个F -1 发动机.
来自辞典例句
- 5. The essential quality that dictates the choice of this propulsion system is readiness.
- 决定选用这种推进系统的主要因素就是其简便性.
来自辞典例句
