大多數滑門用上滑輪是由道理的,不會被地上的灰塵和小東西卡住
所有跟帖:
• 上滑輪+下軌道就是腦殘了;上滑輪不限製上行是半腦殘,除非門夠重 -chinomango- ♂ (148 bytes) () 03/04/2019 postreply 22:48:42
• 上滑輪+下軌道就是腦殘了;上滑輪不限製上行是半腦殘,除非門夠重 -chinomango- ♂ (148 bytes) () 03/04/2019 postreply 22:48:42
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