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单词 sustainer
释义

WordReference Random House Unabridged Dictionary of American English © 2024
sus•tain•er  (sə stānər),USA pronunciation n. 
  1. a person or thing that sustains.
  2. Rocketry
    • any stage of a multistage rocket or guided missile that sustains flight after the burnout of the booster.
    • the rocket engine or cluster of engines contained in such a stage.
  • Middle English sosteynere. See sustain, -er1 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
susˈtainer /səˈsteɪnə/ n
  1. a rocket engine that maintains the velocity of a space vehicle after the booster has been jettisoned
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更新时间:2025/2/23 15:03:26