Generally speaking, abbreviations such as sched. or SKDs. (SKDs capitalized is mostly within military/governmental usage) will not appear in prose or similarly written texts. They are reserved for titles, headlines, shorthand notes, or other areas where space is a concern.
The pectoral girdle is an imcomplete ring because it is open in the back between what? The KGB Agent answer: The pectoral girdle is an incomplete ring because it is open in the back between the scapulae.
Diamond Girdle. Girdle is the thin perimeter of a diamond, dividing the crown above from the pavilion below. When viewing a diamond in its setting or from a profile view, the girdle is the widest part (or the circumference) of the polished diamond - the portion of the stone that makes contact with the setting itself. When loose diamonds are measured, they are measured by the girdle to obtain length and width in millimeters.