[机械键盘] 感觉机械键盘拆封后就要开始计算日历寿命了(触点氧化)。
自用的罗技 K835,TTC 青轴，20 年购入，24 年开始出现按键失灵，用砂纸从缝隙中插进去打磨几下能好段时间； 25 年多键失灵严重，打磨法也不好用了，拆解了几个按键发现全部铜片整体黑化严重。 同事的罗技 TTC 红轴 22 年购入，现在也开始失灵了，估计里面的铜片都开始严
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