1595| 9
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聚四氟乙烯和鋁合金相對(duì)摩擦那個(gè)更耐磨? |
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點(diǎn)評(píng)
自潤(rùn)救贖靠把自己給磨平了,填充進(jìn)不平的地方,再就不怎么會(huì)磨損,你以為自潤(rùn)是怎么實(shí)現(xiàn)的;
還有用石墨也是,你看看摩擦出來都是黑的石墨粉。
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