放气阀只能单向放气，高度太高时可以放些气降下来，但遇到高度太低想要升高时就没办法了

来源: 天青水蓝于 2023-02-04 11:25:05 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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