DIC_2_3.15.2.3.1 支架、竖板、板(frames, boards)[br/]
DIC_2_3.15.2.3.2 底座、卯眼(base, stand, socket, mortise)[br/]
DIC_2_3.15.2.3.3 竖杆、榫头、横档(upright beam, tenon, crosspiece, rung)[br/]