The filters are comprised of a clay pot set inside a plastic bucket with a nozzle at the bottom of it.
该过滤器其实就是一个涂敷胶体银的多孔过滤陶罐装在其底部开有水嘴的塑料桶里。
2
Straw, chaff, animal hair, and quartz were part of the mixture that protected and strengthened the clay material, as did ropes attached to wooden pegs at the bottom layer.
为了保护和强化陶泥，混合物中添加了稻草、谷壳、动物毛发和石英，底层还用绳子与木桩相连。
3
The coal and limestone storage yard must have a bottom impermeabilization system. This system may be constituted by a clay layer, a geomembrane layer, or other impervious material.