将它对折一次后 :0.1mm x 2^1 =0.2mm
将它对折两次后 :0.1mm x 2^2 =0.4mm
将它对折3次后 :0.1mm x 2^3=0.8mm
.
将它对折20次后 :0.1mm x 2^20 =104857.6mm = 104.8576m
将它对折一次后 :0.1mm x 2^1 =0.2mm
将它对折两次后 :0.1mm x 2^2 =0.4mm
将它对折3次后 :0.1mm x 2^3=0.8mm
.
将它对折20次后 :0.1mm x 2^20 =104857.6mm = 104.8576m