一、车辆号码承载客体表面特征 首先观察号码承载客体的金属表面：犯罪份子用立铣刀、挫具、砂纸等工具对号码进行挫改后，由于金属本身物质的减少，加上外部自然环境的影响，必然会产生一些新的特征。又因汽车和摩托车的车架与发动机金属构成不同，这使得挫改后的金属表面又反 First, the number of vehicles carrying the surface characteristics of the object First of all observe the number of objects carrying the metal surface: Criminals with end mills, set tools, sandpaper and other tools to make changes to the number, due to the reduction of the metal itself, coupled with the external natural environment Influence, will inevitably produce some new features. Because of the car and motorcycle frame and engine metal composition is different, which makes the metal surface after the reform and anti