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端面圓跳動,,請教 |
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點評
其實以A,、B為基準(zhǔn)主要目的是要求在加工時要一刀下,,使A、B減少垂直度偏差,,保證另一邊跳動度最大值,。不加基準(zhǔn)B,加工時A,、B不一定一刀下了,。
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