WHAT DOES YB:GLASS & ER MEAN?

 4a,b. And it could be proved through the orientation relationship by PF mapping, as revealed in Fig. 4c,d, analyzing it by which the shut-packed plane 200 of diopside plus the shut-packed aircraft 111 of spinel received. Besides, the several orientation connection with PF mapping can be expressed with the various factors overlapped, For example,