放氣閥隻能單向放氣，高度太高時可以放些氣降下來，但遇到高度太低想要升高時就沒辦法了

來源: 天青水藍於 2023-02-04 11:25:05 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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