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書(shū)上介紹導(dǎo)軌的幾種形式,疑問(wèn) |
點(diǎn)評(píng)
不是人字齒,。是渦輪,洋氣的說(shuō)法叫“透平”,。
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點(diǎn)評(píng)
不是自動(dòng)換磨頭的,,但是有點(diǎn)這意思,因?yàn)槭怯肅BN,,很細(xì)的,,所以要求跳動(dòng)越小越好。
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