To describe those blocks and analyze their stabilities, the stereographic projection diagram method is developed and employed. 为了准确地描述这些块体并进行稳定分析,提出赤平极射投影作图法。
Method The angles of the bullet ballistic inside body were analyzed by ways of solid geometry construction and trigonometric function numeration. 方法采用立体几何作图法和三角函数计算法进行体内弹道射击角度计算。