?阶梯形地基

... 阶梯形基脚：stepped footing 阶梯形地基：stepped foundation 阶梯形底脚：stepped footing ...

?阶式基础

... stepped footing 阶梯形底脚 stepped foundation 阶式基础 stepped foundation 阶梯形地基 ...

?阶形基础

... stepped focusing magnet ==> 阶梯型聚焦磁铁 stepped foundation ==> 阶形基础 stepped gear ==> 塔齿轮,分级齿轮 ...

?阶梯形基础

... stepped footing 阶梯形基础 stepped foundation 阶梯形基础 stepped labyrinth gland 高低齿迷宫式汽封 ...