10172| 15
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如何校準(zhǔn)三點(diǎn)內(nèi)徑千分尺 |
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點(diǎn)評(píng)
哦,那你沒(méi)明白我的意思,你要量多大的孔,就買多大的環(huán)規(guī),對(duì)不對(duì)0沒(méi)關(guān)系。
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