| 单词 | gun pendulum |
| 释义 | gun pendulum (extremely rare) n WORD FAMILY gun pendulum n a ballistic pendulum consisting of a suspended gun; the velocity of a projectile in the bore of a gun can be measured by the recoil when the gun is discharged Hyper ballistic pendulum a physical pendulum consisting of a large mass suspended from a rod; when it is struck by a projectile its displacement is used to measure the projectile's velocity |
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