stacking sequence in a sentence

Examples

1. A stacking fault is an irregularity in the planar stacking sequence of atoms in a crystal  in FCC metals the normal stacking sequence is ABCABC etc ., but if a stacking fault is introduced it may introduce an irregularity such as ABCBCABC into the normal stacking sequence.
2. A stacking fault is an irregularity in the planar stacking sequence of atoms in a crystal  in FCC metals the normal stacking sequence is ABCABC etc ., but if a stacking fault is introduced it may introduce an irregularity such as ABCBCABC into the normal stacking sequence.