木楼梯侧板，木楼梯小梁在阶梯两边支撑楼梯的踏板和竖板的有凹口的木板

木楼梯侧板，木楼梯小梁在阶梯两边支撑楼梯的踏板和竖板的有凹口的木板的英文翻译

基本释义

• A notched board at either side of a staircase that supports the treads and risers.