central purline中檩条
articulated purline活接檩条
purline designing檩条设计
edge purline边檩
angle purline角钢檩条
purline design檩条设计
roofing purline屋面檩条
side timber purline檩条
Purline and others production檩条及其他
N（名词） a horizontal beam that provides intermediate support for the common rafters of a roof construction 檩条