backlimb造句

• Progressive limb rotation and lock-up in a symmetric fold induces shear at both the forelimb and backlimb of the fold which may then result in faults on both limbs causing lift-off.
• Like the asymmetric fold faulting, as progressive slip along the basal detachment occurs, either the forelimb or backlimb ( the limb closest to the source of thrust ) thrust may reconnect with the basal detachment.