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和你想象不一样的换轨
source link: https://zhuanlan.zhihu.com/p/36349606
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上个星期换了一个星期的钢轨，天天晚上睡不好，那我就想着把钢轨究竟是咋换的给大家说说，好让你们也睡不好。 换轨怎么换？第一步把旧的切下来，第二步把新的放上去，第三步连接好。完成，perfect！这个思路，看着…
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