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新買的床子都必須要有問題嗎?買回來(lái)就能直接用的根本沒有 |
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點(diǎn)評(píng)
新機(jī)床 沒用三天就壞軸承 ...
是不是導(dǎo)輪的軸承沒裝好啊。或者軸承已經(jīng)壞了???
今天 有來(lái)了新故障。不知什么時(shí)候,隨著鉬絲的運(yùn)行,有嗡嗡的鳴叫聲。好想從哪個(gè)導(dǎo)輪傳出的
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