ratio of erosion thickness and stratigraphic thickness
thickness difference to average thickness
Thickness-control with thickness gauge
tube thickness (=tube-wall thickness)
24 h thickness swelling rate
6 dB sound beam full wall thickness overlap area
ablative thickness transducer
abnormal coal seam thickness
Absorber effective thickness
absorbing layer thickness
Absorption layer thickness
AC type iron sheet thickness gauge
accumulated total coal seam thickness
accumulation thickness of attributes
accuracy of traverse thickness