“rifling angle”的概念、定义、翻译、参考文献-科学参考

单词	rifling angle
释义	rifling angle Encyclopedia 工学刑事科学技术释 rifling angle缠度与缠角为了增加弹丸在空气中飞行的稳度，提高射击精度，在枪管内壁设计了与枪管纵轴线呈一定倾斜角度的膛线，赋予弹丸以导转力，使弹丸围绕自己纵向轴心旋转飞行。膛线缠度是膛线的导程与枪管口径的比值，导程又称缠距，是膛线旋转一周沿枪管轴线方向前进的距离。膛线上任意一点的切线与枪管轴线的夹角叫膛线缠角。
随便看	public service inequalities between urban and rural area public service of press and publication public service quality of museum public service standards of museum public service system of museum digital culture and creativity public service TV program public shaming of offender Public Shareholder public signal public space public space lighting public spending for operation public sphere public spirit public sports facilities public sports service system public square dancing public supervision over urban and rural planning public switched telephone network public switched telephone network，PSTN public telephone system of urban rail transit public television and broadcasting institutions of Hong Kong public television network public television stations in the United States public toilet，public lavatory

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