发布时间:2025-02-03 09:40:29
1、直接用个绳子把钢筋从建好的房子的阳台上吊上去就可以了。
2、用滑轮,把滑轮放在建好的房子的阳台上,用人力拉,或买电动机把钢筋拉上去。
五金的电镀方式电白沙电电着黑古铜哑铜等怎么区分啊各自有什么样的优缺点
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