board to board connector
board-to-board connector
on-board color alarm board
printed-circuit board(PCB)(PC board)
section for gangway board and diving board
anterior trapezoidal tubercle
box girder with trapezoidal section
channel with trapezoidal section
complex trapezoidal integral
composite trapezoidal formula
composite trapezoidal quadrature
composite trapezoidal rule
compound trapezoidal formula
damped trapezoidal method