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型号为7222的滚动轴承的内径d应该是______mm, 滚动体是______体。
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型号为7222的滚动轴承的内径d应该是______mm, 滚动体是______体。
时间：2021-09-08 15:40
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青书学堂
西安石油大学
机械设计基础
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110,球,
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