11248| 19
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機(jī)械加工件孔間距有標(biāo)準(zhǔn)么 |
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點(diǎn)評
根據(jù)使用要求,,相關(guān)件不會發(fā)生干涉,匹配配合件的對應(yīng)尺寸,。
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點(diǎn)評
還有內(nèi)六角螺栓
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