rifled gun 中文意思是什麼
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Study on methods for establishing the technical condition of rifled gun rejecting
線膛火炮報廢技術條件確定方法的探討 -
Discussion about equally fired round and erosion of rifled bores tank gun
線膛坦克炮內膛燒蝕磨損規律與等效發射彈數對應關系
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