底座固定在建筑物墙面附近，其纵向轴心线与建筑物墙面平行，纵轴线到墙面间距为3米。
The base is fixed near the building wall, the vertical axle line is parallel to the building wall, the distance from vertical axle line to the wall is 3m.
在你打算用螺丝钉把鞋撑固定在底座上的位置用铅笔做记号。
Mark with a pencil where your screws will go to attach the stand to the book base.
圆形的砖混地基底座是固定的上面安装了钢轨而房体就由一台小型电动马达驱动在钢轨上转动。
Its circular brick-and-cement foundation is stationary, supporting a steel track on which the house revolves, moved by a small electric motor.
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