Substratum,hemi-spherical >)Tqt!?
Flatness L/2 @633 nm on flat surface or better(specify). =E{`^IT'R
Figure irregularity L/10@633nm. T9q-,w/j;
no chips exceeding &Y eA:i?
Thickness specified at the edge, all types. 7T'B6`-Ox
Substratum BK7 D20×5 PCX f+ 300 mm R_xRp&5
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!