Substratum,hemi-spherical [FN4 _
Flatness L/2 @633 nm on flat surface or better(specify). @;g|styh^
Figure irregularity L/10@633nm. _p,1m[&M
no chips exceeding ;SVAar4r
Thickness specified at the edge, all types. i YBp"+#2
Substratum BK7 D20×5 PCX f+ 300 mm O+*<^*YyD
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!