The distance from the ray's origin to the impactpoint.
从光线的原点到碰撞点的距离。
2
Finally, this thesis analyzes the variation regular pattern of impactpoint according to the calculation results and presents several important conclusions.
最后，根据计算结果对落点的变化规律进行了分析，并得出了几个重要结论。
3
The camera focuses on a gun recoiling, then pans out to search for the impactpoint. A white line of smoke arcs above the city and ploughs into a group of houses.