弹道学不匹配，而且他的枪根本没有发射过。

Ballistics don't match, and his gun was never fired.

法医弹道学这门技术可以用来确定案件中，是否涉及使用了某种武器。

This technique is used to determine whether a certain firearm or tool was used in the crime.

目的了解高原球形和三角形破片分别击中猪后肢软组织的创伤弹道学特点。

Objectives To study the ballistic feature of soft tissue impacted by steel spheres or triangular fragments at high altitude.

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。

Neither technique is complicated or new, but the combination of images and ballistics had never been used for launch analyses before.