Peabody action
present participle of on-road
(medicine) An unusually rapid childbirth.
(firearms, historical) An early form of breechloading firearm action, where the heavy breechblock tilted downwards across a bolt mounted in the rear of the breechblock, operated by a lever under the rifle.
Having a normal amount of calcium in the urine.
博物館のボランティアは、下方に傾く重い閉鎖栓を用いる初期の薬室装填式作動機構が、19世紀後半に兵士たちが前装銃よりも速く再装填できるようにしたと説明した。
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