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breech bolt造句

"breech bolt"是什麽意思   

例句與造句

  1. The third model was also produced as a takedown rifle, and featured a modified receiver that allowed the breech bolt to lock externally.
  2. This mechanism featured a balanced breech bolt, meaning that the breech bolt contained a quantity of metal proportioned to the weight and velocity of the bullet.
  3. This mechanism featured a balanced breech bolt, meaning that the breech bolt contained a quantity of metal proportioned to the weight and velocity of the bullet.
  4. This balances the recoil forces so that the breech bolt does not move rearward until the bullet has left the muzzle of the barrel, and therefore allows the bullet to be fired with no loss of energy.
  5. The slide lock " stands in such a relation to the body of the firing pin as will prevent the firing pin reaching the primer until the pin has moved forward a sufficient distance to insure locking of the breech bolt . " This prevents the action sleeve " from being retracted by the hand of the gunner until after firing, and hence rendering the firearm more safe"
  6. It's difficult to find breech bolt in a sentence. 用breech bolt造句挺難的

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