n.顶楼的隔间；镶墙石板
"The simplest stonework is rubBle, roughly Broken stones Bound in mortar. Ashlar work consists of regularly cut Blocks with squared edges." 最简单的石料加工品是粗石,在研磨机中粗略地破碎的石头。方石加工品是由整齐地切割出具方形边缘之石块所组成。
bastard ashlar 粗琢石, 毛石墙面琢石
hammer dressed ashlar 锤琢石
ashlar piece 砌琢石
coursed ashlar 成层琢石
