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ballistic pendulum    我要挑错精准翻译

参考词典中ballistic pendulum的常规释义:

基本释义
  • 弹道摆,冲击摆
英英解释
  •  1个名词解释

    1. a physical pendulum consisting of a large mass suspended from a rod; its displacement is used to measure the velocity of a projectile
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