主管道那種，除了抽出來沒有別的辦法。普通廚房那種U型管堵了很簡單，氫氧化鈉即可。如果有濃硫酸更佳

來源: bulubulu 於 2025-09-24 15:10:59 [舊帖] [給我悄悄話] 本文已被閱讀：次

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