The purified water then descends by gravity to a basement holding tank. 經(jīng)過(guò)凈化的水靠重力流到地下室的另一個(gè)集水箱里。
In flat terrain, sewers enroute to a treatment a small plant may increase in depth to the point where it is impractical to continue gravity flow. 在平坦地形地帶，排水管線(xiàn)再道小型污水廠(chǎng)途中可能深度增加到以重力流不切實(shí)際。
Openings in the glass facade and the ventilation shutters in the roof create a healthy natural flow and exchange of air. 開(kāi)口玻璃幕墻及通風(fēng)百葉窗在屋頂創(chuàng )造一個(gè)健康的自然流動(dòng)和交換的空氣。
