斜踏步 meaning in English

winder

Stairs , ladders and walkways - code of practice for the design , construction and maintenance of straight stairs and winders
楼梯梯子和走道.单跑楼梯和斜踏步的设计制造和维修的实施规范
Wood stairs - specification for stairs with closed risers for domestic use , including straight and winder flights and quarter or half landings
木楼梯.第1部分:家用带封闭式梯级竖板的楼梯,包括直踏步和斜踏步楼梯和直角转弯楼梯平台或全宽楼梯平台规范