對于所有的機械產品來說，時間長了難免會出現一些問題。不是說一定是機械故障，質量差，可能是某些配件磨損或者其他原因造成的。對于高壓清洗機來說，有時運行一段時間后壓力會突然下降，從而大大降低清洗效率。那么是什么原因呢?

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