1cm
6.The molar absorptivity isε=7.41×104 L·mol-1·cm-1 at 524 nm.
7.The NED rate of the primary carcinoma ≤0. 5cm,0. 6cm-l. 0cm,and 1. 1cm-2. 0cm were 93. 3% ,81. 4% and 77. 9% respectively.
8.The maximum was in 0~1cm layer,and decreased obviously bellow 2~3cm layer.

