只要管壁夠厚就没事

来源: MoonRiverMe 于 2020-06-12 16:04:09 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

弯的技巧是在管子里灌沙而且要捣实了再加热弯，这样才不会瘪了

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