我換過幾次管道了。加拿大的管道埋得深，坡度容易形成。但這個房子在熱帶，管道埋得淺，坡度不夠是個大問題。

來源: 守月於 2024-01-26 13:15:49 [舊帖] [給我悄悄話] 本文已被閱讀：次

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