breechblock造句
例句与造句
- To load the pistol grasp the breechblock on the serrated gripping surfaces on the sides and pull the machine straight to the rear.
- At the apex of the recoil stroke the recoil spring acts to reverse the direction of the breechblock, chambering a fresh cartridge.
- The ignition of the propellant blew the breechblock through the turret door and threw the sighting hood onto the ship's deck.
- A spiral recoil spring is positioned horizontally, directly below the barrel between the parallel guides of the receiver and rails of the breechblock.
- The breech was locked and unlocked by recoil action which brings the operating level guide pins against cams to raise and lower the breechblock.
- It's difficult to find breechblock in a sentence. 用breechblock造句挺难的
- It employed a robust version of the " trapdoor " breechblock design originated by Erskine S . Allin, Master Armorer of the Springfield Armory.
- The function of the breechblock was to assist in the final chambering of the round, close the breech, and actuate the trigger trip.
- The model 1873 was the fifth variation of the Allin trapdoor design, and was named for its hinged breechblock, which opened like a trapdoor.
- However, drawing back slightly on the breechblock will ride it over the cam, and releasing it will permit the recoil spring to close the action.
- It is operated by rotating the lever down and forward, which causes the breechblock to slide rearward away from the barrel and eject the spent round.
- Believing an explosion imminent within the breechblock of one of the ship's guns, Cronan shoved his hand within the block to prevent its closing.
- Thus connected, complete motion of the operating lever to the right will cause the breechblock to rotate and to be swung clear of the breech recess.
- Swinging the operating lever fully to the right engages cam surfaces of the breechblock carrier and extractor, causing the extractor to eject the empty cartridge case.
- A rolling block is a form of firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin.
- Its lesser arm ( upper ) continuously presses a cam upward that engages a slot in the under surface of the breechblock slide when the action is closed.
