Substratum,hemi-spherical 0e~4(2xK
Flatness L/2 @633 nm on flat surface or better(specify). hLSas#B>
Figure irregularity L/10@633nm. Qvhy9Cr;
no chips exceeding Z-'xJq
Thickness specified at the edge, all types. &Y8S! W@4
Substratum BK7 D20×5 PCX f+ 300 mm x)2ZbIDB:"
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!