利用超声导波的形势，测量骨头的厚度，从而判断骨头是否患有骨质疏松症-ultrasonic guided wave measurement in bone

根据大气折射率判断波导 输入所需参数。 选择要画的图形。 根据所显示的图形判断是否为标准大气(Determination of waveguide based on atmospheric refractive index Input required parameters. Choose the graphics you want to draw. Judging whether it is a standard atmosph