spandrel step是什么意思

网络释义

1)spandrel step,三角形踏步2)external angle of stair step,踏步阳角3)bull-nosed step,圆角踏步4)pitchboard,楼梯踏步三角定线板5)N-steps triangle,多步三角形6)wheel step,扇形踏步

Reinforcement protection technology for external angle of stair step;

楼梯踏步阳角采用钢筋护角新工艺