好問題還沒想到過。搞不好門確實容易脫落，可更換磨損滑輪。如上下導軌不鬆動門不會跌落。防患入手。

來源: IEbird 於 2024-04-21 07:38:01 [舊帖] [給我悄悄話] 本文已被閱讀：次

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