Substratum,hemi-spherical *:a'GC%/
Flatness L/2 @633 nm on flat surface or better(specify). JZ `>|<W
Figure irregularity L/10@633nm. 3(1]FKZtt
no chips exceeding Z}|TW~J=
Thickness specified at the edge, all types. 3^{8_^I
Substratum BK7 D20×5 PCX f+ 300 mm hT?6sWa
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!