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보안 필터 필터芯堵塞时.
而.
那得看你滤芯是啥材料的吗.
는.
则.
滤芯泡在氢氧化钠溶液中，说明你的滤芯是金属的，有黄色粘稠，应该是有微生物滋生，不知你用在什么场合，前一级过滤不达标，保安过滤器内介质流速太慢，溶液红褐色，应该是氧化铁之类的东西吗.
는.
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