Plants and microorganisms filter wastewater so it can be reused to flush toilets and for other non-potable USES.
植物和微生物对废水进行过滤，以便重复使用于冲洗厕所和其它非饮用途。
Watts Series ET non-potable water expansion tanks may be installed in a tee or any other suitable tapping in the heating system and can be installed in a vertical or horizontal position.
美国瓦茨系列et非饮用水膨胀罐可以安装在一个T形管或供暖系统上任何其他适合的连接端口上，可以垂直安装或水平安装。
Watts Series ET non-potable water expansion tanks may be installed in a tee or any other suitable tapping in the heating system and can be installed in a vertical or horizontal position.
美国瓦茨系列et非饮用水膨胀罐可以安装在一个T形管或供暖系统上任何其他适合的连接端口上，可以垂直安装或水平安装。
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