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并且靠稍微偏移后瞄准座来修正大型火炮因膛线所带来的偏流。 Correction for drift caused by the adoption of rifling in big guns was approximated by inclination of the rear sight bracket. | ||
1635年，rifle作为英语单词出现在一条专利中。这是一条在枪膛中刻凿膛线的专利。 In 1635 the word rifle appeared in English in a patent for cutting these grooves in gun barrels. | ||
人们将来复线（膛线）引入枪管之后提高了射击的精确度。但是装弹和清膛仍然很麻烦。 The introduction of rifling, or cutting grooves, into a barrel had already improved accuracy, but the weapons remained difficult to load and clean. | ||
法语单词rifler就曾经有“刮”(scratch)的意思，这也就解释了为什么枪膛内的膛线被称为rifling。 In French the word rifler meant to "scratch" and that's why the grooves inside a gun barrel are called rifling. | ||
建立了非对称弹丸在挠性渐速膛线身管内的弹丸一般运动动力学模型和运动微分方程组。 A general dynamic model and differential equations for an unsymmetrical projectile traveling in a flexible, increasing twist rifled bore gun tube are developed. | ||
弹头（在枪膛中）的前进过程中，铁制子弹（此处指底座上的铁质闭锁，也有使用软木制作闭锁的——译注）会膨胀，紧咬住螺旋形的膛线，使得射程和精准度都大大增加，同时减少子弹死火。 On its way, the iron bullet expanded, gripping the spiral rifling and spinning so tightly along its course that its range and accuracy were greatly increased, with fewer misfires. | ||
