• The acting force of prying and pressing marks is leverage effect which is different from that of hitting marks, impact effect.

    痕迹打击痕迹作用力形式不同,分别杠杆作用碰撞作用。

    youdao

  • The acting force of prying and pressing marks is leverage effect which is different from that of hitting marks, impact effect.

    痕迹打击痕迹作用力形式不同,分别杠杆作用碰撞作用。

    youdao

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