单词 | automatic breech mechanism |
释义 | automatic breech mechanism [¦ȯd·ǝ¦mad·ik `brēch ´mek·ǝ`niz·ǝm] ORDNANCE A device that utilizes the energy of recoil, or the pressure of the powder gases, to open the breech, withdraw the fired cartridge case, insert a new cartridge, and close the breech. |
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