Substratum,hemi-spherical k7>|q"0C
Flatness L/2 @633 nm on flat surface or better(specify). g|<]B$yN#
Figure irregularity L/10@633nm. spGB)k,^
no chips exceeding 'C:>UlzLy
Thickness specified at the edge, all types. _=NwQu\_F
Substratum BK7 D20×5 PCX f+ 300 mm }*ZHgf]~#
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!