当今犯罪日趋智能化,作案人的反侦查经验及手段越来越变化多端,导致不少传统的痕迹发现率及可利用率有所降低。然而工具痕迹由于它的立体性、稳固性等特点,以及作案人不易彻底破坏,因此,在侦查破案中有着不可替代的作用。 Nowadays, crime is becoming more and more intelligent. The anti-detection experience and methods of perpetrators are becoming more and more varied. As a result, many traditional detection and availability of marks have been reduced. However, due to its characteristics of tooling, such as its solidity and stability, as well as the criminals are not completely destroyed, therefore, has an irreplaceable role in the investigation and detection of cases.