[填空题]
An astronomical telesk pvxwaq/v/5cl dl6i; ru5kl/.18 bhi cope ha (v61vq5 ghxzy. -/aerr vfj;ns a magnification of 8.0. If the two lenses are 28 $cm$ apart, determine the focal length of each lens.
The focal length of the eyepiece lens is cm
The focal length of the objective lens is cm