你是说ext ladder跨过侧面屋顶架在墙上？放blank要两个梯子吗？工作范围两侧加起来约40尺宽。

来源: chinomango 于 2014-11-03 12:06:50 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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