ddr2286 wrote:熱水器的水垢(恕刪)
leoliou wrote:我覺得比較像是電位差(恕刪)
如果真是電位差腐蝕的話,氧化的應該是鋁,膠帶壽命較差而已
ethan_yen wrote:請檢查看看排煙管的洩(恕刪)