携带Frontier过滤器可作为多天背包旅行的备用，用于大型泵式过滤器阻塞或损坏后。
Carry the Frontier filter as a back up on multi-day backpacking trips in case larger pump filters clog or become damaged.
压力微分开关对过滤器的状态进行监测，当超过设定值时，就会向开关发出一个“过滤器阻塞”的信号，在计算机上的指示灯就会发亮。
Pressure differential switch monitors the status of the filter, when the set point is exceeded, a signal will be given to switch on "filter clogged" indicating lamp on the computer.
但一定要在水槽里放一个金属或塑料的过滤器，以免大块儿颗粒会阻塞排水管。
Be sure to place a metal or plastic strainer in your sink to avoid clogging the drain with the granules.
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