Substratum,hemi-spherical <kIg>+
Flatness L/2 @633 nm on flat surface or better(specify). :c%vl$
Figure irregularity L/10@633nm. 0p\R@{
no chips exceeding +~mBo+ ,
Thickness specified at the edge, all types. EdxTaR
Substratum BK7 D20×5 PCX f+ 300 mm 4SSq5Ve<
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!