小蘇打是正解，酸堿中和，有些地方砂紙磨不幹淨的。保護劑似乎是油+漆

來源: chinomango 於 2023-04-18 16:01:50 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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