WHAT DOES YB:GLASS & ER MEAN?

 4a,b. And it could be proved from the orientation marriage by PF mapping, as proven in Fig. 4c,d, analyzing it by which the shut-packed plane 200 of diopside plus the close-packed plane 111 of spinel acquired. Aside from, different orientation romantic relationship with PF mapping is usually expressed with different factors overlapped, For illus