Substratum,hemi-spherical }Mb'tGW Flatness L/2 @633 nm on flat surface or better(specify). w6In{uO-Z Figure irregularity L/10@633nm. u FYQ^ no chips exceeding ]BQWA Thickness specified at the edge, all types. (Q]Y>
' Substratum BK7 D20×5 PCX f+ 300 mm iQ}sp64 有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!