primaarlibisemissüsteem kristallis, primaarne libisemissüsteem kristallis, esmane libisemissüsteem kristallis
first slip system to become active because of the critical resolved shear stress on the system is attained earlier than on the others (compare: seconary slip system), esmasene aktiivne libisemissüsteem kristallis, mis on nihkepingest tulenevalt otsustav teiste ees (vrd sekundaarlibisemissüsteem kristallis)
