“缠度与缠角”的概念、定义、翻译、参考文献-科学参考

单词	缠度与缠角
释义	缠度与缠角 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	Japan Meteorological Agency Japan News Network Japan one village, one product Japan Patent Information Organization Japan Playwrights Association Japan Proton Accelerator Research Complex Japan Railway Disaster Prevention System Japan Railway Technical Research Institute Japan Satellite Broadcasting Inc Japan's bombardment of the Xinshenglong Ship Japan Science and Technology Agency Japanse army's experiments for biological weapons Japan's modern agricultural economy Japan Society for the Study of the Book of Songs Japan Society of Chinese Ci Poetry Japan Society of Human Culture Japan Society of Library and Information Science Japan Society of Publishing Studies Japan space activities Japan Standard Time Japan stemona Japan thistle Japan Trench Japan Tsukuba science city Japan Ukiyo-e Museum

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