尤其是指与英国垂直式风格有关的一种扇形拱顶的交叉拱肋在接合点的拉长浮凸饰（雕刻的楔石）。
Especially an elongated boss (carved keystone) at the junction of the intersecting ribs of the fan vaulting associated with the English Perpendicular style.
一种复杂的拱顶建筑风格，流行于英国哥特式末期，其拱棱发散似扇形。
An intricate style of traceried vaulting, common in late English Gothic, in which ribs arch out like a fan.
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