Abstract: The relation between the line attenuation coefficient and the material thickness of FTO has been studied, and the function between them has been given.

• 摘 要： 用数值模拟的方法研究了FTO客体材料的线吸收系数随着穿透材料深度的变化关系，并拟合出材料有效线吸收系数与厚度之间的函数表达式。