发布时间:2025-02-02 23:28:14
你好,增压泵上有一个排气孔,你把它拧开一点,知道有水流出来就证明气体已排空,要是空气未排空,会导致密封件损坏。
cheers 芝华仕 pt015 现代简约可伸缩电视柜详细介绍
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