Substratum,hemi-spherical 9d^m 7}2
Flatness L/2 @633 nm on flat surface or better(specify). P_0[spmFU
Figure irregularity L/10@633nm. JFO,Q
-y\
no chips exceeding j0X^,ot@m
Thickness specified at the edge, all types. tY]?2u%)
Substratum BK7 D20×5 PCX f+ 300 mm Q0Do B
有哪位哥哥姐姐懂的,帮忙翻译一下,诚谢!!