B kind curved line and curved surface
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
180° curved duct with rectangular cross-section
3D curved prestressing tendon
3-D curved surface processing
3-D curved-surface fitting
3-D free curved surface
6-node curved quadrilateral element
a curved box girder bridge