网络释义
1)spherical refracting surface,球形折射面2)refracting of spherical,球面折射3)refraction at a simple spherical surface,单球面折射4)spherical refracting system,球面折射系统5)Single spherical refracting system,单球面折射系统6)spherical refraction system with conjugate axis,共轴球面折射系统