A power amplifier module for amplifying radio frequency signals includes a radio frequency power amplifier including one or more semiconductor transistors, adapted to receive an input radio frequency signal and power control signals, and to output an amplified radio frequency signal. Top levels of first and second taxonomies are merged. The conveyor moves in traversing motion across the frame to distribute concrete. The piezoelectric element is longer than the liquid chamber, and an edge of the piezoelectric element on the flow resistance part side is positioned not to face the second portion of the oscillating plate but to face the first portion of the oscillating plate. The gradient-corrected linear interpolation method and system may also apply a gradient-correction gain to the gradient correction term.