Neither technique is complicated or new , but the combination of images and ballistics had never been used for launch analyses before .
这一技术并非什么新颖复杂的技术，但是把成像技术和弹道学综合运用在以前的发射分析中是不曾有过的。
Both problems mr ray resolved are from the field of dynamics and his solutions are expected to contribute to greater precision in areas such as ballistics .
ray解出的这两个问题来自于动力学领域，他的解决方案将有望对弹道学等领域提供更精确的方法。
Although hobbes made important contributions in a number of other fields , including geometry , ballistics and optics , it is for his work as a political thinker that he is best known .
