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.
本文旨在通过对某类常规战术导弹发射控制系统射击模型的分析，探讨导弹打击目标的精确度。
Through the analysis to firing model of the launching control system for a certain type conventional tactical missile, the firing accuracy to the target is discussed.
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