1) firing pin mark
![点击朗读](/dictall/images/read.gif)
击针头痕迹
2) hitting marks
![点击朗读](/dictall/images/read.gif)
打击痕迹
1.
The acting force of prying and pressing marks is leverage effect which is different from that of hitting marks,impact effect.
撬压痕迹与打击痕迹的作用力形式不同,分别是杠杆作用和碰撞作用。
3) bullet engraving
![点击朗读](/dictall/images/read.gif)
弹头痕迹
1.
Analysis and comparison of bullet engraving are important for criminal investigation and the discovery of evidence in gun related case.
弹头痕迹的分析与比对是破获涉枪案件的关键,目前国内外在这方面主要采用对弹头痕迹的几何形态、位置及线条进行比对的方法。
4) firing-pin impression
![点击朗读](/dictall/images/read.gif)
冲击磨损痕迹
1.
By collecting the images of the cartridge cases shot by four kinds of guns,it was found that the circumference of the firing-pin impression appeared as an irregular jigsaw shape,showing its nonlinear nature and fractal characteristics.
对4种枪支发射的弹壳进行图像采集,经观察发现冲击磨损痕迹周边均为锯齿状不规则形态,表明其是非线性的且具有分形特征;应用分形理论的周长-面积公式和最小二乘法原理,对所采集的4种枪支的冲击磨损痕迹图像进行分析计算的结果表明,枪种不同,所配用击针头的形状、尺寸不同,冲击磨损痕迹图像的分形维数值也不同,因此可以用分形维数来描述弹壳上不同枪支的冲击磨损痕迹特征,从而为冲击磨损痕迹的量化检验作出初步的探索。
5) the impress of the introductory needle
![点击朗读](/dictall/images/read.gif)
导针印压痕迹
6) barring stitch
![点击朗读](/dictall/images/read.gif)
固线头针迹
补充资料:针头
1.针尖。借指绣针。 2.安在注射器上的针状金属管。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条