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滑膛槍炮
一种身管内壁没有膛线的火器 / 維基百科,自由的 encyclopedia
滑膛槍炮(smoothbore gun)是指身管內壁沒有膛線的火器。人類最早期發明的火器都是前裝滑膛槍械,也就是不具有膛線、並需於槍炮口方向裝填彈藥的火器設計。由於早期的滑膛炮彈與炮膛間密合不平整,造成火藥燃氣外洩而大大降低火藥推力,導致其射程近、精度低、殺傷力弱,因此在膛線問世後逐漸被線膛槍炮取代。但隨着近代機械製造工藝不斷進步解決了彈膛密合問題,滑膛炮反而因炮彈不會自旋可保存更大動能、與發射時炮管損耗較低而開始被重新廣泛應用於坦克炮上,重新回到歷史的舞台中。
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